Coordinated Use of Variable Speed Limits and Ramp Metering for Improving Safety on Congested Freeways

Variable Speed Limits and Ramp Metering are key tools that can help in influencing conditions on congested freeways. Their individual use in improving safety of particular locations on a freeway corridor has been shown to be effective. This study extends that logic to include both these strategies working in tandem on a large stretch of freeway. Micro-simulation study is undertaken to show the effects of each of these strategies in positively affecting surrogate measures of safety on a congested stretch of Interstate 4. Best case scenarios are identified to show the effective implementation strategies and benefits are compared for different cases. The coordinated strategy is also compared to the effectiveness of each of the individual strategies of Variable Speed Limits and Ramp Metering both in terms of reducing the risk of crash and improvement in traffic parameters such as speeds and travel times.


  • English

Media Info

  • Media Type: CD-ROM
  • Features: Figures; References; Tables;
  • Pagination: 17p
  • Monograph Title: TRB 86th Annual Meeting Compendium of Papers CD-ROM

Subject/Index Terms

Filing Info

  • Accession Number: 01044859
  • Record Type: Publication
  • Report/Paper Numbers: 07-0008
  • Files: BTRIS, TRIS, TRB
  • Created Date: Feb 8 2007 4:34PM