ACCIDENT AND SPEED STUDIES IN CONSTRUCTION ZONES

The report includes results of two studies of construction zone traffic control. The first study involved analysis of traffic accidents occurring in 79 zones in seven states. Results indicate a before to during accident rate increase of 6.8%. Results also include breakdowns by accident types, severity, light conditions, roadway type, area type, work area roadway type, construction type and state. The second study was field testing of speed reduction methods. Speeds, erratic maneuvers and conflicts were measured at three sites--an urban freeway, a rural freeway, and an urban street. The field studies examined the effect of the following construction zone parameters on vehicle speeds and safety: Sequential flashing arrow boards; speed zoning (advisory and regulatory); enforcement; transverse striping; obliteration of nonappropriate pavement markings; taper length; lane width reduction; and active warning of speed zoning. Recommended guidelines for construction zone traffic controls are also included.

  • Corporate Authors:

    Midwest Research Institute

    425 Volker Boulevard
    Kansas City, MO  USA  64110-2299

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  USA  20590
  • Authors:
    • Graham, Jerry L
    • Paulsen, R J
    • Glennon, J C
  • Publication Date: 1977-6

Media Info

  • Features: Photos;

Subject/Index Terms

Filing Info

  • Accession Number: 00167398
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: FHWA-RD-77- 80 Final Rpt., HS-021 357, FCP 31A2-524
  • Contract Numbers: DOT-FH-11-8121
  • Files: NTIS, TRIS, USDOT
  • Created Date: Dec 27 1989 12:00AM