A ramp to allow wheeled vehicles access between street and sidewalk

noun A curb incline, often found on the outer edges of a driveway, which is used to launch ollies. Also found at wheelchair ramps.

Also called a curb ramp, it is a depression built into the curb of a sidewalk to permit passage by a wheelchair. The incline should not exceed a gradient of 1:12 and the flat surface width should be no less than 4 feet wide.