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.
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Corporate Authors:
Missouri University of Science and Technology, Rolla
Department of Civil, Architectural and Environmental Engineering
1401 N Pine Street
Rolla, MO United States 65409Missouri Department of Transportation
Organizational Results Division, P.O. Box 270
Jefferson City, MO United States 65102Federal 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