Off-vehicle fare payment
Off-vehicle fare payment dramatically speeds up boarding, by eliminating time-intensive payment process and allowing for boarding at all doors. The Federal Transit Administration notes:
Moving all fare collection off the bus offers the greatest potential for reducing dwell time. Not only is fare payment time reduced to zero, but all doors of the bus can be used for both loading and unloading.
Off-vehicle fare payment may require additional vending machines at transit station stops. Thus, such a system may only be practical on corridors with very high numbers of boardings.