LOW-COST SAFETY IMPROVEMENTS AT FREEWAY DISCONTINUITIES

Traffic shifts at freeway discontinuities (on and off exit ramps, weaving sections and lane drops) are possible sources of traffic accidents. Tapered freeway exits consist of two lanes with one initial exit lane and one tapered exit lane. This paper describes the effects of low-cost actions to better traffic operations at "tapered" freeway exits. Not much is known about how drivers use these exits, or about how safely the exits are used. This study looked at new road markings and traffic signs tested by two tapered exits. Impacts of these changes were ascertained by before and after observations. Traffic operations were assessed and drivers were interviewed. Analysis of results indicates a substantial decrease (greater than 50%) of the most undesirable driver behaviors. Safety measures did not negatively effect traffic flow characteristics. The drivers generally perceived the exits as safe to very safe.

Language

  • English

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 263-271

Subject/Index Terms

Filing Info

  • Accession Number: 00793822
  • Record Type: Publication
  • ISBN: 9040718520
  • Files: TRIS
  • Created Date: Jun 5 2000 12:00AM