Appendices: Evaluation of Variable Speed Limits on I-270/I-255 in St. Louis

In May of 2008, the Missouri Department of Transportation installed a “Variable Speed Limit” (VSL) system along the I-270/I-255 corridor in St. Louis. This project evaluated the VSL system and its potential impacts and benefits to the transportation users. The technical system evaluation focused on three areas - mobility, safety, and public and police perceptions. The VSL is not performing as desired in terms of improvements to overall mobility along the corridor, but is providing limited benefits to some segments. Noticeable benefits have been seen with respect to reduction in the number of crashes during the evaluation period. The driving public and law enforcement are widely dissatisfied with the VSL system based on their perceptions of benefits to congestion relief, compliance with posted speed limits, and overall visibility of the current sign configuration. This document contains the following appendices to the final report: (A) Methodology; (B) Process Data and Assessment; (C) Literature Review; (D) References; and (E) Data Collected.

• Record URL:
  https://spexternal.modot.mo.gov/sites/cm/CORDT/or11014_App.pdf
• 
• Corporate Authors:

  Missouri University of Science and Technology, Rolla

  Department of Civil, Architectural and Environmental Engineering
  1401 N Pine Street
  Rolla, MO  United States  65409

  Missouri Department of Transportation

  Organizational Results Division, P.O. Box 270
  Jefferson City, MO  United States  65102

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Bham, Ghulam H
  • Long, Suzanna
  • Baik, Hojong
  • Ryan, Tom
  • Gentry, Lance
  • Lall, Khushboo
  • Arezoumandi, Mahdi
  • Liu, Daxiao
  • Li, Tao
  • Schaeffer, Brian
• Publication Date: 2010-10

Language

• English

Media Info

• Media Type: Web
• Edition: Final Report
• Features: Appendices; Figures; Maps; References; Tables;
• Pagination: 462p

Subject/Index Terms

• TRT Terms: Benefits; Compliance; Highway safety; Impact studies; Interstate highways; Mobility; Public opinion; Speed limits; Traffic congestion; Traffic law enforcement; Traffic mitigation; Traffic signs; Variable speed limits; Visibility
• Uncontrolled Terms: User perceptions
• Geographic Terms: Saint Louis (Missouri)
• Subject Areas: Highways; Operations and Traffic Management; I73: Traffic Control;

Filing Info

• Accession Number: 01340901
• Record Type: Publication
• Report/Paper Numbers: OR 11-014 Appendices
• Contract Numbers: TRyy0825, RI 08-025
• Files: TRIS, USDOT, STATEDOT
• Created Date: May 26 2011 8:55AM