CONVENTIONAL ROAD SAFETY: A STUDY OF FIXED OBJECTS, PHASE 1. FINAL REPORT

This report describes the search for cost-effective ways of reducing fixed object accidents on conventional state highways in California. Because of lower average travel speeds and traffic volumes, it is only cost-effective to remove, move, place guardrail and make breakaway fixed objects at selected locations. Four of the fourteen fixed objects shown in the TASAS computer file were selected for in-depth study. Accident data and the number of objects for - ends of bridge railing, utility poles, traffic sign posts and trees - were collected. It was found that 160 bridges having 3 or more accidents in three years should have approach guardrail installed first. Then, all bridges on routes with more than 2,000 ADT should have approach guardrail installed. Moving utility poles on 67 miles of conventional road should be investigated first. All large steel and wood traffic sign posts in rural areas should be removed, moved or made breakaway. Selective tree projects, which reflect both environmental and safety concerns, should be investigated. A 15-mile route segment was studied in detail. It was found to be cost-effective to treat 5 fixed objects on the route by replacing bridge rail, moving utility poles, removing trees, protecting ends of bridge railing with guardrail and making traffic signs breakaway. (FHWA)

Media Info

  • Features: References;
  • Pagination: 95 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00311349
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: FHWA-CA-79-1 Final Rpt., HS-030 649
  • Contract Numbers: B-1-66
  • Files: HSL, TRIS, USDOT, STATEDOT
  • Created Date: Jun 26 1983 12:00AM