In order to comply with ADA guidelines how large should the bus stop pad be to load and off load wheelchair passengers from standard size transit city buses 30 35and 40 foot buses What is the standard?

In order to comply with ADA guidelines how large should the bus stop pad be to load and off load wheelchair passengers from standard size transit city buses 30 35and 40 foot buses What is the standard?
60" minimum distance parallel to the road and 96" minimum distance perpendicular. The 5'x8' pad is compliant.