ADA Best Practices Tool Kit for State and Local Governments

13 [§ 4.7.10]

A corner-type curb ramp is located at the center (or apex) of a corner and is often aligned to direct users into the middle of an intersection. As the illustration on the right shows, the alignment of a corner-type curb ramp means that people who travel down the ramp might be near the path of vehicular traffic once they enter the street. Therefore, if a marked crossing or crosswalk is provided, there must be a 48-inch deep area contained within the markings at the bottom of the ramp to protect people after they descend the ramp. When taking this measurement, the measuring tape should be aligned parallel to the ramp run itself and should stretch from the intersection of the ramp and gutter to the innermost edge of the pavement marking.