Evaluation of Speed Monitoring Displays for Work Zones in Las Vegas, Nevada

Document Type

Article

Publication Date

2009

Publication Title

Transportation Research Record

Volume

2107

First page number:

46

Last page number:

56

Abstract

Speed monitoring displays (i.e., speed trailers) have been evaluated in many states for reducing vehicular speeds in work zones. This study evaluated the enhancements to speed trailers regarding message size, the use of flashing, and the presence of more than one speed trailer in work zones. Field tests were conducted at two sites in the Las Vegas, Nevada, area, and traffic data were collected for statistical analysis. Regression models were developed to estimate the speeding likelihood and vehicle speeds on the basis of the free-flow speed data. The results indicated that the size of displayed messages and the use of flashing did show significant impact on speeding likelihood and speed reduction for vehicles in work zones. The extent of the impact varied for vehicle classification, the lanes they were operating in, and the day or night in which they were deployed. This study recommended larger message size and the use of flashing signs for speed trailers. More than one speed trailer was recommended for additional speed reduction.

Keywords

Field experiments; Multivariate analysis; Regression analysis; Road work zones; Speed zoning (Traffic engineering); Traffic engineering; Traffic engineering--Data processing

Disciplines

Civil and Environmental Engineering | Civil Engineering | Construction Engineering and Management | Environmental Engineering

Language

English

Permissions

Use Find in Your Library, contact the author, or interlibrary loan to garner a copy of the item. Publisher policy does not allow archiving the final published version. If a post-print (author's peer-reviewed manuscript) is allowed and available, or publisher policy changes, the item will be deposited.

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