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2010•Unpublished venueRequires access

Evaluation of Variable Speed Limits on I‐270/I‐255 in St. Louis

Ghulam H. Bham, Suzanna K. Long, Hojong Baik, Tom Ryan, Lance Gentry, Khushboo Lall, Mahdi Arezoumandi, Daxiao Liu, Tao Li, Brian Schaeffer

Open publisher page 12 citations

Abstract

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.

About this research paper

What this paper is about

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.

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OpenAlex reports 12 citations for this work. Citation counts describe recorded attention and do not establish research quality.

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Available abstract

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.

Key concepts: Speed limit, Transport engineering, Visibility, Enforcement, Variable (mathematics), Public transport, Law enforcement, Business

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