Accessibility (or just access) refers to the ease of reaching goods, services, activities, and destinations, which together are called opportunities.<ref>"Accessibility for Transportation Planning: Measuring People’s Ability to Reach Desired Goods and Activities." 27 February 2017. Todd Litman. Victoria Transport Policy Institute. http://www.vtpi.org/access.pdf</ref>
Accessibility almost always measures how long it takes to reach
a destinations, or rather how many destinations can be reached within a certain amount of time. However, different tools and evaluations vary in the way they measure first and last mile, the types of destinations they include, population segmentation analysis, and the mechanisms used for counting destinations.
==Accessibility vs. Mobility==