Perpendicular accessible spaces require a van accessible aisle with a minimum width of 8-ft extending the full length of the parking space. The access aisle must be marked, must be at street level, and shall not encroach on the traveled way. Two adjacent perpendicular or angled accessible spaces may share a common access aisle where front and rear entry parking is permitted. Where an access aisle serves only one parking space and parking is restricted to either front entry or rear entry orientation, the access aisle shall be located on the passenger side of the vehicle. The provides specific guidance for pavement markings and signing for accessible parking