What makes a curb ramp ADA-compliant?
To be considered compliant, all curb ramps must include a ramp and a landing at the top – each with specified cross-slopes and running slopes. Smooth transitions onto the sidewalk and crosswalk must be provided. In some circumstances, street level landings are also required. Ponding water in the gutter area in front of ramps must be prevented. When curb ramps are constructed into the walkway so that pedestrian traffic would cross the ramp, side flares are then required with specified slopes to prevent trip hazards. As of 2001, truncated domes are now required on all new curb ramps to help the visually impaired determine when they are entering a roadway.
