FREEWAY CONSTRUCTION ZONES IN ILLINOIS: A FOLLOW-UP STUDY. FINAL REPORT

This study had two two principal objectives: First, to identify whether any driver population subgroup is overrepresented in construction zone accidents and second, to evaluate the effect of various traffic control measures in effect during construction on accident rates. The first issue was addressed by matching characteristics of drivers involved in construction accidents contained in a sample of 441 accident reports collected by the Illinois State Police with those involved in overall freeway accidents on the Chicago Area Expressway System. The results indicated that no definite distinctions could be made from the two groups on the basis of driver gender, age group or residence. On average, a higher percentage of male drivers were involved in injury accidents, a confirmation of previous research. The second objective was carried out by classifying construction zone accidents for three major reconstruction projects on I-290 Extension Expressway in the Chicago area by a number of attributes. It was found that the accident rates increased from 3.11 to 7.24 A/MVM during construction, then dropped to 2.41 after construction. Moreover, accidents were more likely to occur (a) near ramps, (b) when construction occurred over the left side of the roadway, and (c) when the road cross-section had 2 directional lanes.

  • Corporate Authors:

    Illinois Transportation Research Consortium

    Chicago, IL  United States 

    University of California, Davis

    Pavement Research Center, One Shields Avenue
    Davis, CA  United States  95616

    Illinois Department of Transportation

    2300 S. Dirksen Parkway
    Springfield, IL  United States  62764

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Rouphail, N M
    • Mousa, R
    • Said, K
    • Jovanis, P P
  • Publication Date: 1990-6

Media Info

  • Pagination: 156 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00611914
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: FHWA/IL/RC-004
  • Files: TRIS, USDOT
  • Created Date: Aug 31 1991 12:00AM