CLEAR ZONE REQUIREMENTS FOR URBAN HIGHWAYS

A clear zone, or clear recovery area, (as defined in the AASHTO Roadside Design Guide and the AASHTO Green Book) is that portion of the roadside, within the highway right-of-way as established by the highway agency, free of nontraversable hazards and fixed objects. The purpose of a clear zone is to provide drivers who have gone off the road a reasonable opportunity to stop safely or otherwise regain control of the vehicle. The speaker discusses clear zone requirements for urban highways, the difficulty in coming up with precise requirements, and how they are affected by roadside design and other factors.

• Corporate Authors:

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Harrison, K
• Conference:
  • Fifth National Highway/Utility Conference
  • Location: Phoenix, Arizona
  • Date: 1995-10-4 to 1995-10-6
• Publication Date: 1996

Language

• English

Media Info

• Features: Figures; Tables;
• Pagination: p. 61-72

Subject/Index Terms

• TRT Terms: Clear zones; Control; Design; Drivers; Roadside; Traffic safety; Urban highways; Vehicles
• Subject Areas: Design; Environment; Highways; Vehicles and Equipment; I20: Design and Planning of Transport Infrastructure;

Filing Info

• Accession Number: 00793923
• Record Type: Publication
• Report/Paper Numbers: FHWA-PD-96-020
• Files: TRIS, USDOT
• Created Date: Jun 22 2000 12:00AM