About 40-60% of pedestrian and cyclist injuries occur at intersections.[6][7] Daylighting reduces collisions by removing obstructions that prevent drivers from seeing other cars, pedestrians, bicyclists, and other road users.
The National Association of City Transportation Officials recommends daylighting by preventing cars from parking within 20–25 feet (6.1–7.6 m) of an intersection.[8] If parking is merely disallowed by law or signage, drivers may not always comply, so it is best to replace parking with curb extensions or other physical infrastructure that do not impede visibility, like planters, granite blocks, or bike share stations.[9]
Many jurisdictions, such as New York State (excluding New York City) and Pennsylvania disallow parking 20–32 feet (6.1–9.8 m) near all intersections.[10][11] In such cases, further daylighting typically involves safety improvements that encourage compliance with existing laws against parking near intersections. On the other hand, in jurisdictions that by default allow parking close to an intersection, such as New York City, daylighting removes parking spots.
