New construction: A project in which an entirely new facility is built from the ground up or where a new facility is added to an existing facility.

Obstacle: An object that limits the vertical passage space, protrudes into the circulation route, or reduces the clearance width of a sidewalk or trail. On sidewalks, obstacles are most common in retrofit situations, because accessibility was not considered in the original plan. On trails, obstacles can include objects such as boulders, drop-offs, and tree branches.

Onscreen keyboard: See Virtual Keyboard.

Optical character recognition (OCR): Technology system that scans and converts printed materials into electronic text.

Output: Any method of displaying or presenting electronic information to the user through a computer monitor or other device.

Parallel curb ramp: A curb ramp design in which the sidewalk slopes down on either side of a landing at street level; parallel curb ramps require users to turn on the landing before entering the street.

Passing space: A section of path wide enough to allow two users to pass one another or travel abreast.

Passing space interval: The distance between passing spaces.

Pedestrian: A person who travels on foot or who uses assistive devices, such as a wheelchair, for mobility.

Pedestrian actuated traffic control: A push-button or other control operated by pedestrians that is designed to interrupt the prevailing signal cycle to permit pedestrians to cross an intersection.

Pedestrian/bicycle coordinator: A position responsible for planning and managing non-motorized facilities and programs, creating safety and promotional materials that encourage bicycle and pedestrian transportation, and serving as the principal liaison between government transportation entities, the press, citizen organizations, and individuals on bicycling and walking issues.

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