The other day I saw the frustration of a handicapped man in a motorized wheelchair. He rode to the bottom of the walking ramp, and was so upset that there was no wheelchair ramp for him to access the parking lots. It was pure curb. The man was afraid to "jump" off the curb and break his chair.
A wheelchair ramp is an inclined plane installed in addition to or instead of stairs. Ramps permit wheelchair users, as well as people pushing strollers, carts, or other wheeled objects, to more easily access a building or parking lot.
As quoted on the NYC Parks & Recreation web page:
The Parks Department's goal is to go beyond mere compliance with the Americans With Disabilities Act (ADA) to provide access, as well as increased opportunities for recreation and participation, by improving Parks processes and through strategic partnerships. Parks is currently hard at work on an agency-wide transition plan to make all aspects of the Parks Department more accessible and has put together an ADA Committee to offer guidance on accessibility issues throughout in City parks.