Intersection daylighting
Intersection daylighting, or simply daylighting, is an urban design strategy to enhance safety at intersections by improving visibility.[1][2][3][4][5]
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.
Example implementations
[edit]See also
[edit]References
[edit]- ^ "Visibility/Sight Distance". National Association of City Transportation Officials. July 10, 2013. Retrieved November 24, 2024.
- ^ "NYC DOT Enhances Pedestrian Safety at More Than 300 Locations Leading Into the Heart of Its Construction Season". www.nyc.gov. Retrieved November 24, 2024.
- ^ Ramsay, D. J. (January 5, 2024). "Vision Zero: What is Intersection Daylighting?". City of Lancaster, PA. Retrieved November 24, 2024.
- ^ Kennedy Hardy. Guidance for Implementation of the AASHTO Strategic Highway Safety Plan, Volume 12: A Guide for Reducing Collisions at Signalized Intersections (PDF). Washington DC: National Cooperative Highway Research Program, Transportation Research Board.
- ^ Federal Highway Administration. Pedestrian Safer Journey, Safety Improvement Countermeasures: Remove/Restrict Parking. Washington, DC.: Federal Highway Administration.
- ^ Asgarzadeh, Morteza; Verma, Santosh; Mekary, Rania A.; Courtney, Theodore K.; Christiani, David C. (June 1, 2017). "The role of intersection and street design on severity of bicycle-motor vehicle crashes". Injury Prevention. 23 (3): 179–185. doi:10.1136/injuryprev-2016-042045. ISSN 1353-8047. PMC 5502254. PMID 27881469.
- ^ "We Need to Make Intersections Safer for Pedestrians and Cyclists". Institute for Transportation and Development Policy. August 17, 2022. Retrieved November 24, 2024.
- ^ "Visibility/Sight Distance". National Association of City Transportation Officials. July 10, 2013. Retrieved November 24, 2024.
- ^ NACTO Bike Share Siting Guide (PDF), National Association of City Transportation Officials
- ^ "2023 New York Laws :: VAT - Vehicle and Traffic :: Title 7 - Rules of the Road :: Article 32 - Stopping, Standing, and Parking :: 1202 - Stopping, Standing or Parking Prohibited in Specified Places". Retrieved November 24, 2024 – via Justia Law.
- ^ Ramsay, D. J. (January 5, 2024). "Vision Zero: What is Intersection Daylighting?". City of Lancaster, PA. Retrieved November 24, 2024.