Definition of pedestrian: Any person who, while on a sidewalk or similar paved walkway alongside a roadway, is walking, running, or otherwise moving in any manner on foot or who, while on a paved, public, travelable surface is riding on any type of conveyance (including a wheelchair or roller skates) moved by human muscular power.
This definition of pedestrian fails to capture the standard concept of a pedestrian in that it allows for the inclusion of some things that are not ordinarily thought of as pedestrians, for example, people who are , and excludes some things that are ordinarily thought of as pedestrians, for example, people who are .