https://www.transitwiki.org/TransitWiki/index.php?title=Transit_signal_priority_(TSP)&feed=atom&action=historyTransit signal priority (TSP) - Revision history2024-03-29T13:04:53ZRevision history for this page on the wikiMediaWiki 1.35.1https://www.transitwiki.org/TransitWiki/index.php?title=Transit_signal_priority_(TSP)&diff=3117&oldid=prevRabiabonour at 22:11, 31 October 20162016-10-31T22:11:54Z<p></p>
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<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==Introduction==</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==Introduction==</div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>Transit Signal Priority (TSP) is a general term for a set of operational improvements that use technology to reduce dwell time at traffic signals for transit vehicles by holding green lights longer or shortening red lights. TSP may be implemented at individual intersections or across corridors or entire street systems. As the Federal Transit Administration’s TSP Planning and Implementation Handbook points out, the distinction between Transit Signal Priority and signal pre-emption is an important one because: “signal priority modifies the normal signal operation process to better accommodate transit vehicles, while pre-emption interrupts the normal process for special events such as an approaching train or responding fire engine...”<ref>United States Department of Transportation, Federal Transit Administration. [http://www.trb.org/Main/Blurbs/157393.aspx “Transit Signal Priority: A Planning and Implementation Handbook.”] 2005.</ref></div></td><td class='diff-marker'>+</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>Transit Signal Priority (TSP) is a general term for a set of operational improvements that use technology to reduce dwell time at traffic signals for transit vehicles by holding green lights longer or shortening red lights. TSP may be implemented at individual intersections or across corridors or entire street systems. As the Federal Transit Administration’s TSP Planning and Implementation Handbook points out, the distinction between Transit Signal Priority and signal pre-emption is an important one because: “signal priority modifies the normal signal operation process to better accommodate transit vehicles, while pre-emption interrupts the normal process for special events such as an approaching train or responding fire engine...”<ref <ins class="diffchange diffchange-inline">name="handbook"</ins>>United States Department of Transportation, Federal Transit Administration. [http://www.trb.org/Main/Blurbs/157393.aspx “Transit Signal Priority: A Planning and Implementation Handbook.”] 2005.</ref></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>TSP systems require four components: a detection system aboard transit vehicles; a priority request generator which can be aboard the vehicle or at a centralized management location; a strategy for prioritizing requests; and an overall TSP management system. There are a variety of software and hardware systems that may be used for TSP management. Both the California Department of Transportation (Caltrans) and the City of Los Angeles have developed software to suit their specific needs.<ref<del class="diffchange diffchange-inline">>United States Department of Transportation, Federal Transit Administration. [http:</del>/<del class="diffchange diffchange-inline">/www.trb.org/Main/Blurbs/157393.aspx “Transit Signal Priority: A Planning and Implementation Handbook.”] 2005.</ref</del>></div></td><td class='diff-marker'>+</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>TSP systems require four components: a detection system aboard transit vehicles; a priority request generator which can be aboard the vehicle or at a centralized management location; a strategy for prioritizing requests; and an overall TSP management system. There are a variety of software and hardware systems that may be used for TSP management. Both the California Department of Transportation (Caltrans) and the City of Los Angeles have developed software to suit their specific needs.<ref <ins class="diffchange diffchange-inline">name="handbook" </ins>/></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==TSP System Architecture==</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==TSP System Architecture==</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>===Centralized TSP===</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>===Centralized TSP===</div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>In this type of TSP system, a central system organizes and manages requests for priority from many vehicles. This type of system is best for jurisdictions that have control of the traffic signal system and the transit system, and the two systems can communicate with one another. The ‘priority request system’ may be located on the transit vehicle if that vehicle is equipped with a Global Positioning System (GPS) and can communicate directly with the traffic management center. The priority request system may also be located at the transit management center, where the decision to request priority can be determined based on the requests coming from all the vehicles in the field. A third scenario is possible in this type of system wherein the priority request system is based at the traffic management center and happens in real-time as vehicles approach intersections. In this type of system, the amount of communication between vehicles, signals, and the two types of management centers can become somewhat burdensome, especially if a pre-determined ranking of priority is not established.<ref>United States Department of Transportation. [http://www.trb.org/Main/Blurbs/160246.aspx “Transit Signal Priority Research Tools.”] 2008.</ref> </div></td><td class='diff-marker'>+</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>In this type of TSP system, a central system organizes and manages requests for priority from many vehicles. This type of system is best for jurisdictions that have control of the traffic signal system and the transit system, and the two systems can communicate with one another. The ‘priority request system’ may be located on the transit vehicle if that vehicle is equipped with a Global Positioning System (GPS) and can communicate directly with the traffic management center. The priority request system may also be located at the transit management center, where the decision to request priority can be determined based on the requests coming from all the vehicles in the field. A third scenario is possible in this type of system wherein the priority request system is based at the traffic management center and happens in real-time as vehicles approach intersections. In this type of system, the amount of communication between vehicles, signals, and the two types of management centers can become somewhat burdensome, especially if a pre-determined ranking of priority is not established.<ref <ins class="diffchange diffchange-inline">name="researchtools"</ins>>United States Department of Transportation. [http://www.trb.org/Main/Blurbs/160246.aspx “Transit Signal Priority Research Tools.”] 2008.</ref> </div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>===Distributed TSP===</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>===Distributed TSP===</div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>The key difference between the two system types is that in the Distributed TSP system, all priority decisions are made at the intersection level, rather than at a central location. Distributed systems take less management, but the decision to grant priority can be less nuanced than if a centralized location were managing it.<ref<del class="diffchange diffchange-inline">>United States Department of Transportation. [http://www.trb.org/Main/Blurbs/160246.aspx “Transit Signal Priority Research Tools.”] 2008.<</del>/<del class="diffchange diffchange-inline">ref</del>> <del class="diffchange diffchange-inline"> </del></div></td><td class='diff-marker'>+</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>The key difference between the two system types is that in the Distributed TSP system, all priority decisions are made at the intersection level, rather than at a central location. Distributed systems take less management, but the decision to grant priority can be less nuanced than if a centralized location were managing it.<ref <ins class="diffchange diffchange-inline">name="researchtools" </ins>/> <ins class="diffchange diffchange-inline"> </ins></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>In this type of system, the transit vehicle itself delivers a request for priority each time it approaches an intersection. This method requires less communication between traffic and transit management centers than Centralized TSP, but one problem that arises in this system is the possibility of granting priority to vehicles that are on-time or ahead of schedule.</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>In this type of system, the transit vehicle itself delivers a request for priority each time it approaches an intersection. This method requires less communication between traffic and transit management centers than Centralized TSP, but one problem that arises in this system is the possibility of granting priority to vehicles that are on-time or ahead of schedule.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==Benefits==</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==Benefits==</div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>According to the federal Department of Transportation, the benefits from using TSP improvements include “reduced transit travel times, improved schedule adherence, improved transit efficiency, and increased road network efficiency as measured by person mobility.” The Federal Transit Administration also considers TSP to be important to the successful implementation of [[Bus rapid transit]] systems.<ref<del class="diffchange diffchange-inline">>United States Department of Transportation. [http:</del>/<del class="diffchange diffchange-inline">/www.trb.org/Main/Blurbs/160246.aspx “Transit Signal Priority Research Tools.”] 2008.</ref</del>></div></td><td class='diff-marker'>+</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>According to the federal Department of Transportation, the benefits from using TSP improvements include “reduced transit travel times, improved schedule adherence, improved transit efficiency, and increased road network efficiency as measured by person mobility.” The Federal Transit Administration also considers TSP to be important to the successful implementation of [[Bus rapid transit]] systems.<ref <ins class="diffchange diffchange-inline">name="researchtools" </ins>/></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>In a demonstration project on busy Los Angeles County Metro bus lines, the Transit Signal Priority improved travel time savings by 25 percent and, on one line, increased overall travel speeds by 29 percent.<ref>US Department of Transportation. Research and Innovative Technology Administration. [http://www.itsbenefits.its.dot.gov/its/benecost.nsf/ID/111FCD5A4E264420852573E200623854?OpenDocument&Query=BOTM “Benefits.”] 2001.</ref></div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>In a demonstration project on busy Los Angeles County Metro bus lines, the Transit Signal Priority improved travel time savings by 25 percent and, on one line, increased overall travel speeds by 29 percent.<ref>US Department of Transportation. Research and Innovative Technology Administration. [http://www.itsbenefits.its.dot.gov/its/benecost.nsf/ID/111FCD5A4E264420852573E200623854?OpenDocument&Query=BOTM “Benefits.”] 2001.</ref></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==Costs==</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==Costs==</div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>TSP system maintenance is a relatively insignificant cost that can be incorporated into regular maintenance of transit vehicles and systems. Additionally, costs to other users of roadways tend to be minimal, or even imperceptibly small because the adjustments to traffic signals are made in terms of seconds at a time and signal timing readjusts quickly.<ref<del class="diffchange diffchange-inline">>United States Department of Transportation, Federal Transit Administration. [http:</del>/<del class="diffchange diffchange-inline">/www.trb.org/Main/Blurbs/157393.aspx “Transit Signal Priority: A Planning and Implementation Handbook.”] 2005.</ref</del>></div></td><td class='diff-marker'>+</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>TSP system maintenance is a relatively insignificant cost that can be incorporated into regular maintenance of transit vehicles and systems. Additionally, costs to other users of roadways tend to be minimal, or even imperceptibly small because the adjustments to traffic signals are made in terms of seconds at a time and signal timing readjusts quickly.<ref <ins class="diffchange diffchange-inline">name="handbook" </ins>/></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The costs associated with implementing TSP will also include the costs of any studies required to analyze needs for the system. The cost of implementing a TSP demonstration project in 2000 in Los Angeles averaged $13,500 per intersection, $75 per transponder per bus, and $10 million overall.<ref>US Department of Transportation. Research and Innovative Technology Administration. [http://www.itscosts.its.dot.gov/its/benecost.nsf/ID/6105A5CEB6C12C9C85256DB100458915?OpenDocument&Query=CApp "Costs."] 2001.</ref></div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The costs associated with implementing TSP will also include the costs of any studies required to analyze needs for the system. The cost of implementing a TSP demonstration project in 2000 in Los Angeles averaged $13,500 per intersection, $75 per transponder per bus, and $10 million overall.<ref>US Department of Transportation. Research and Innovative Technology Administration. [http://www.itscosts.its.dot.gov/its/benecost.nsf/ID/6105A5CEB6C12C9C85256DB100458915?OpenDocument&Query=CApp "Costs."] 2001.</ref></div></td></tr>
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</table>Rabiabonourhttps://www.transitwiki.org/TransitWiki/index.php?title=Transit_signal_priority_(TSP)&diff=2324&oldid=prevBK: moved image to top2015-04-22T20:04:34Z<p>moved image to top</p>
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<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">[[Image:BusSignal.jpg|right|thumb|350px|A bus signal in Orlando, FL in 2007. Photo by Flickr user joeventures.]]</ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"></ins></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==Introduction==</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==Introduction==</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Transit Signal Priority (TSP) is a general term for a set of operational improvements that use technology to reduce dwell time at traffic signals for transit vehicles by holding green lights longer or shortening red lights. TSP may be implemented at individual intersections or across corridors or entire street systems. As the Federal Transit Administration’s TSP Planning and Implementation Handbook points out, the distinction between Transit Signal Priority and signal pre-emption is an important one because: “signal priority modifies the normal signal operation process to better accommodate transit vehicles, while pre-emption interrupts the normal process for special events such as an approaching train or responding fire engine...”<ref>United States Department of Transportation, Federal Transit Administration. [http://www.trb.org/Main/Blurbs/157393.aspx “Transit Signal Priority: A Planning and Implementation Handbook.”] 2005.</ref></div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Transit Signal Priority (TSP) is a general term for a set of operational improvements that use technology to reduce dwell time at traffic signals for transit vehicles by holding green lights longer or shortening red lights. TSP may be implemented at individual intersections or across corridors or entire street systems. As the Federal Transit Administration’s TSP Planning and Implementation Handbook points out, the distinction between Transit Signal Priority and signal pre-emption is an important one because: “signal priority modifies the normal signal operation process to better accommodate transit vehicles, while pre-emption interrupts the normal process for special events such as an approaching train or responding fire engine...”<ref>United States Department of Transportation, Federal Transit Administration. [http://www.trb.org/Main/Blurbs/157393.aspx “Transit Signal Priority: A Planning and Implementation Handbook.”] 2005.</ref></div></td></tr>
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<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>TSP systems require four components: a detection system aboard transit vehicles; a priority request generator which can be aboard the vehicle or at a centralized management location; a strategy for prioritizing requests; and an overall TSP management system. There are a variety of software and hardware systems that may be used for TSP management. Both the California Department of Transportation (Caltrans) and the City of Los Angeles have developed software to suit their specific needs.<ref>United States Department of Transportation, Federal Transit Administration. [http://www.trb.org/Main/Blurbs/157393.aspx “Transit Signal Priority: A Planning and Implementation Handbook.”] 2005.</ref></div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>TSP systems require four components: a detection system aboard transit vehicles; a priority request generator which can be aboard the vehicle or at a centralized management location; a strategy for prioritizing requests; and an overall TSP management system. There are a variety of software and hardware systems that may be used for TSP management. Both the California Department of Transportation (Caltrans) and the City of Los Angeles have developed software to suit their specific needs.<ref>United States Department of Transportation, Federal Transit Administration. [http://www.trb.org/Main/Blurbs/157393.aspx “Transit Signal Priority: A Planning and Implementation Handbook.”] 2005.</ref></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;">[[Image:BusSignal.jpg|right|thumb|350px|A bus signal in Orlando, FL in 2007. Photo by Flickr user joeventures.]]</del></div></td><td colspan="2"> </td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==TSP System Architecture==</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==TSP System Architecture==</div></td></tr>
</table>BKhttps://www.transitwiki.org/TransitWiki/index.php?title=Transit_signal_priority_(TSP)&diff=1189&oldid=prevAmiller: /* Additional Reading */2012-09-11T17:49:47Z<p><span dir="auto"><span class="autocomment">Additional Reading</span></span></p>
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 17:49, 11 September 2012</td>
</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l41" >Line 41:</td>
<td colspan="2" class="diff-lineno">Line 41:</td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Fehr & Peers. [[media:UCDavis_Transit_Signal_Priority_Report_2011.pdf|"University of California, Davis Transit Signal Prioritization Implementation Study."]] 2011. </div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Fehr & Peers. [[media:UCDavis_Transit_Signal_Priority_Report_2011.pdf|"University of California, Davis Transit Signal Prioritization Implementation Study."]] 2011. </div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>: This study offers an account of how the University of California, Davis and the City of Davis may choose to prioritize certain intersections for improvements that would improve the reliability and overall service of the <del class="diffchange diffchange-inline">Unitrans </del>transit system. These improvements include transportation signal coordination and Transit Signal Prioritization. This study is a strong example of the type of analysis that could be used to determine where and how to implement TSP.</div></td><td class='diff-marker'>+</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>: This study offers an account of how the University of California, Davis and the City of Davis may choose to prioritize certain intersections for improvements that would improve the reliability and overall service of the <ins class="diffchange diffchange-inline">university's </ins>transit system<ins class="diffchange diffchange-inline">, Unitrans</ins>. These improvements include transportation signal coordination and Transit Signal Prioritization. This study is a strong example of the type of analysis that could be used to determine where and how to implement TSP.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>US Department of Transportation. Research and Innovative Technology Administration, Intelligent Transportation Systems Professional Capacity Building Program. [http://www.pcb.its.dot.gov/t3/s080122/s080122_lessons_intro.asp “Lessons Learned: Improving Reliability with Transit Signal Priority Systems - King County Metro Transit and Los Angeles County MTA.”]</div></td><td class='diff-marker'>+</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>US Department of Transportation. Research and Innovative Technology Administration, Intelligent Transportation Systems Professional Capacity Building Program. [http://www.pcb.its.dot.gov/t3/s080122/s080122_lessons_intro.asp “Lessons Learned: Improving Reliability with Transit Signal Priority Systems - King County Metro Transit and Los Angeles County MTA.”] <ins class="diffchange diffchange-inline">2008. </ins></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>: This webinar features a federal perspective and lessons learned from King County in Washington, as well as presentation from the demonstration projects and expansion efforts from Los Angeles County. Individual powerpoint files are available along with the transcript from the Question & Answer session following the webinar.</div></td><td class='diff-marker'>+</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>: This webinar features a federal perspective and lessons learned from King County in Washington, as well as <ins class="diffchange diffchange-inline">a </ins>presentation from the demonstration projects and expansion efforts from Los Angeles County. Individual powerpoint files are available along with the transcript from the Question & Answer session following the webinar.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[Category:Bus rapid transit]]</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[Category:Bus rapid transit]]</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[Category:Technology]]</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[Category:Technology]]</div></td></tr>
</table>Amillerhttps://www.transitwiki.org/TransitWiki/index.php?title=Transit_signal_priority_(TSP)&diff=1188&oldid=prevAmiller: /* Introduction */2012-09-11T17:32:13Z<p><span dir="auto"><span class="autocomment">Introduction</span></span></p>
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 17:32, 11 September 2012</td>
</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1" >Line 1:</td>
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<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==Introduction==</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==Introduction==</div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>Transit Signal Priority (TSP) is a general term for a set of operational improvements that use technology to reduce dwell time at traffic signals for transit vehicles by holding green lights longer or shortening red lights. TSP may be implemented at individual intersections or across corridors or entire street systems. </div></td><td class='diff-marker'>+</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>Transit Signal Priority (TSP) is a general term for a set of operational improvements that use technology to reduce dwell time at traffic signals for transit vehicles by holding green lights longer or shortening red lights. TSP may be implemented at individual intersections or across corridors or entire street systems. <ins class="diffchange diffchange-inline">As the Federal Transit Administration’s TSP Planning and Implementation Handbook points out, the distinction between Transit Signal Priority and signal pre-emption is an important one because: “signal priority modifies the normal signal operation process to better accommodate transit vehicles, while pre-emption interrupts the normal process for special events such as an approaching train or responding fire engine...”<ref>United States Department of Transportation, Federal Transit Administration. [http://www.trb.org/Main/Blurbs/157393.aspx “Transit Signal Priority: A Planning and Implementation Handbook.”] 2005.</ref></ins></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del class="diffchange diffchange-inline">As the Federal Transit Administration’s TSP Planning and Implementation Handbook points out, the distinction between Transit Signal Priority and signal pre-emption is an important one because: “signal priority modifies the normal signal operation process to better accommodate transit vehicles, while pre-emption interrupts the normal process for special events such as an approaching train or responding fire engine...”<ref>United States Department of Transportation, Federal Transit Administration. [http://www.trb.org/Main/Blurbs/157393.aspx “Transit Signal Priority: A Planning and Implementation Handbook.”] 2005.</ref></del></div></td><td class='diff-marker'>+</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>TSP systems require four components: a detection system aboard transit vehicles; a priority request generator which can be aboard the vehicle or at a centralized management location; a strategy for prioritizing requests; and an overall TSP management system. There are a variety of software and hardware systems that may be used for TSP management. Both the California Department of Transportation (Caltrans) and the City of Los Angeles have developed software to suit their specific needs.<ref>United States Department of Transportation, Federal Transit Administration. [http://www.trb.org/Main/Blurbs/157393.aspx “Transit Signal Priority: A Planning and Implementation Handbook.”] 2005.</ref></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div> </div></td><td colspan="2"> </td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>TSP systems require four components: a detection system aboard transit vehicles; a priority request generator which can be aboard the vehicle or at a centralized management location; a strategy for prioritizing requests; and an overall TSP management system. There are a variety of software and hardware systems that may be used for TSP management. Both the California Department of Transportation (Caltrans) <del class="diffchange diffchange-inline"> </del>and the City of Los Angeles have developed software to suit their specific needs.<ref>United States Department of Transportation, Federal Transit Administration. [http://www.trb.org/Main/Blurbs/157393.aspx “Transit Signal Priority: A Planning and Implementation Handbook.”] 2005.</ref></div></td><td colspan="2"> </td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[Image:BusSignal.jpg|right|thumb|350px|A bus signal in Orlando, FL in 2007. Photo by Flickr user joeventures.]]</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[Image:BusSignal.jpg|right|thumb|350px|A bus signal in Orlando, FL in 2007. Photo by Flickr user joeventures.]]</div></td></tr>
</table>Amillerhttps://www.transitwiki.org/TransitWiki/index.php?title=Transit_signal_priority_(TSP)&diff=952&oldid=prevJmatute at 18:40, 31 July 20122012-07-31T18:40:16Z<p></p>
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<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[Category:Bus rapid transit]]</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[Category:Bus rapid transit]]</div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">[[Category:Technology]]</ins></div></td></tr>
</table>Jmatutehttps://www.transitwiki.org/TransitWiki/index.php?title=Transit_signal_priority_(TSP)&diff=945&oldid=prevJmatute at 18:37, 31 July 20122012-07-31T18:37:25Z<p></p>
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<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>: This webinar features a federal perspective and lessons learned from King County in Washington, as well as presentation from the demonstration projects and expansion efforts from Los Angeles County. Individual powerpoint files are available along with the transcript from the Question & Answer session following the webinar.</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>: This webinar features a federal perspective and lessons learned from King County in Washington, as well as presentation from the demonstration projects and expansion efforts from Los Angeles County. Individual powerpoint files are available along with the transcript from the Question & Answer session following the webinar.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>[[Category:<del class="diffchange diffchange-inline">Operating effectiveness</del>]]</div></td><td class='diff-marker'>+</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>[[Category:<ins class="diffchange diffchange-inline">Bus rapid transit</ins>]]</div></td></tr>
</table>Jmatutehttps://www.transitwiki.org/TransitWiki/index.php?title=Transit_signal_priority_(TSP)&diff=889&oldid=prevJmatute at 19:01, 30 July 20122012-07-30T19:01:27Z<p></p>
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<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>: This webinar features a federal perspective and lessons learned from King County in Washington, as well as presentation from the demonstration projects and expansion efforts from Los Angeles County. Individual powerpoint files are available along with the transcript from the Question & Answer session following the webinar.</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>: This webinar features a federal perspective and lessons learned from King County in Washington, as well as presentation from the demonstration projects and expansion efforts from Los Angeles County. Individual powerpoint files are available along with the transcript from the Question & Answer session following the webinar.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>[[Category:<del class="diffchange diffchange-inline">Operations planning]]</del></div></td><td class='diff-marker'>+</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>[[Category:<ins class="diffchange diffchange-inline">Operating effectiveness</ins>]]</div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del class="diffchange diffchange-inline">[[Category:Coordination</del>]]</div></td><td colspan="2"> </td></tr>
</table>Jmatutehttps://www.transitwiki.org/TransitWiki/index.php?title=Transit_signal_priority_(TSP)&diff=735&oldid=prevAmiller: /* Additional Reading */2012-07-23T21:34:40Z<p><span dir="auto"><span class="autocomment">Additional Reading</span></span></p>
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<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==Additional Reading==</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==Additional Reading==</div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>United States Department of Transportation. [<del class="diffchange diffchange-inline">www.fta.dot.gov/documents/TSPHandbook10-20-05</del>.pdf “Transit Signal Priority: A Planning and Implementation Handbook.”] 2005.</div></td><td class='diff-marker'>+</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>United States Department of Transportation. [<ins class="diffchange diffchange-inline">[media:TSPHandbook</ins>.pdf<ins class="diffchange diffchange-inline">|</ins>“Transit Signal Priority: A Planning and Implementation Handbook.”<ins class="diffchange diffchange-inline">]</ins>] 2005.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>: This handbook offers technical information about implementing TSP and includes several case studies of transit systems that gained major cost savings after implementing a TSP system. This handbook thoroughly addresses the state of the practice as it stood in 2005.</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>: This handbook offers technical information about implementing TSP and includes several case studies of transit systems that gained major cost savings after implementing a TSP system. This handbook thoroughly addresses the state of the practice as it stood in 2005.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
</table>Amillerhttps://www.transitwiki.org/TransitWiki/index.php?title=Transit_signal_priority_(TSP)&diff=693&oldid=prevJmatute: /* Costs */2012-07-19T20:53:16Z<p><span dir="auto"><span class="autocomment">Costs</span></span></p>
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<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==Costs==</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==Costs==</div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del class="diffchange diffchange-inline">Maintenance appears to be </del>a relatively insignificant cost that can be incorporated into regular maintenance of transit vehicles and systems. Additionally, costs to other users of roadways tend to be minimal, or even imperceptibly small because the adjustments to traffic signals are made in terms of seconds at a time and signal timing readjusts quickly.<ref>United States Department of Transportation, Federal Transit Administration. [http://www.trb.org/Main/Blurbs/157393.aspx “Transit Signal Priority: A Planning and Implementation Handbook.”] 2005.</ref></div></td><td class='diff-marker'>+</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins class="diffchange diffchange-inline">TSP system maintenance is </ins>a relatively insignificant cost that can be incorporated into regular maintenance of transit vehicles and systems. Additionally, costs to other users of roadways tend to be minimal, or even imperceptibly small because the adjustments to traffic signals are made in terms of seconds at a time and signal timing readjusts quickly.<ref>United States Department of Transportation, Federal Transit Administration. [http://www.trb.org/Main/Blurbs/157393.aspx “Transit Signal Priority: A Planning and Implementation Handbook.”] 2005.</ref></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The costs associated with implementing TSP will also include the costs of any studies required to analyze needs for the system. The cost of implementing a TSP demonstration project in 2000 in Los Angeles averaged $13,500 per intersection, $75 per transponder per bus, and $10 million overall.<ref>US Department of Transportation. Research and Innovative Technology Administration. [http://www.itscosts.its.dot.gov/its/benecost.nsf/ID/6105A5CEB6C12C9C85256DB100458915?OpenDocument&Query=CApp "Costs."] 2001.</ref></div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The costs associated with implementing TSP will also include the costs of any studies required to analyze needs for the system. The cost of implementing a TSP demonstration project in 2000 in Los Angeles averaged $13,500 per intersection, $75 per transponder per bus, and $10 million overall.<ref>US Department of Transportation. Research and Innovative Technology Administration. [http://www.itscosts.its.dot.gov/its/benecost.nsf/ID/6105A5CEB6C12C9C85256DB100458915?OpenDocument&Query=CApp "Costs."] 2001.</ref></div></td></tr>
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</table>Jmatutehttps://www.transitwiki.org/TransitWiki/index.php?title=Transit_signal_priority_(TSP)&diff=692&oldid=prevJmatute: /* Introduction */2012-07-19T20:51:40Z<p><span dir="auto"><span class="autocomment">Introduction</span></span></p>
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<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==Introduction==</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==Introduction==</div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>Transit Signal Priority (TSP) is a general term for a set of operational improvements that use technology to reduce dwell time at traffic signals for transit vehicles by holding green lights longer or shortening red lights <del class="diffchange diffchange-inline">for transit vehicles</del>. TSP may be implemented at individual intersections or across corridors or entire street systems. </div></td><td class='diff-marker'>+</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>Transit Signal Priority (TSP) is a general term for a set of operational improvements that use technology to reduce dwell time at traffic signals for transit vehicles by holding green lights longer or shortening red lights. TSP may be implemented at individual intersections or across corridors or entire street systems. </div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>As the Federal Transit Administration’s TSP Planning and Implementation Handbook points out, the distinction between Transit Signal Priority and signal pre-emption is an important one because: “signal priority modifies the normal signal operation process to better accommodate transit vehicles, while pre-emption interrupts the normal process for special events such as an approaching train or responding fire engine...”<ref>United States Department of Transportation, Federal Transit Administration. [http://www.trb.org/Main/Blurbs/157393.aspx “Transit Signal Priority: A Planning and Implementation Handbook.”] 2005.</ref></div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>As the Federal Transit Administration’s TSP Planning and Implementation Handbook points out, the distinction between Transit Signal Priority and signal pre-emption is an important one because: “signal priority modifies the normal signal operation process to better accommodate transit vehicles, while pre-emption interrupts the normal process for special events such as an approaching train or responding fire engine...”<ref>United States Department of Transportation, Federal Transit Administration. [http://www.trb.org/Main/Blurbs/157393.aspx “Transit Signal Priority: A Planning and Implementation Handbook.”] 2005.</ref></div></td></tr>
</table>Jmatute