01154513

Component

https://doi.org/10.3141/2189-05

http://scholar.google.com...pitz&publication_year=2010

Variable speed limit (VSL) is a type of intelligent transportation system that has shown promise for improving safety on roadways that are subject to adverse weather conditions. A new rural VSL system was installed by the Wyoming Department of Transportation along I-80 in the southeastern part of the state. Statistics on the use of the system during its initial months of implementation are presented along with analyses of the impact on observed speeds of measured weather variables and speed limits on the VSL system. Preliminary results indicate that drivers reduce their speeds by 0.47 to 0.75 mph for every mile per hour in posted speed reduction. The research lays the foundation for a decision support system that will be used in future operations of the VSL system.

01329017

10-2444

English

pp 37-44

2010

Transportation Research Record: Journal of the Transportation Research Board

9780309160636

Print

Maps (1) ; Photos (2) ; References (7) ; Tables (8)

Decision support systems; Field studies; Highway operations; Intelligent transportation systems; Rural areas; Traffic speed; Variable speed limits; Weather conditions

Interstate 80

Speed reduction

Wyoming

Highways; Operations and Traffic Management; Safety and Human Factors; I73: Traffic Control

TRIS, TRB, ATRI

Jan 25 2010 11:09AM

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