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Title:

Comparison of Effects of Automated Speed Enforcement and Police Presence on Speeding in Work Zones

Accession Number:

01123027

Language:

English

Source Data:

Transportation Research Board Annual Meeting 2009 Paper #09-3651

Abstract:

This paper compares the effects of four speed reduction techniques on the speed of vehicles in a moderate and an excessive speeding work zone (both on interstate highways). The techniques were using a speed Trailer, a Police car, a speed Trailer plus a Police car, and an automated Speed Photo-radar Enforcement (SPE) van. The effects on the mean speed and degree of speeding were studied at the location the treatment was implemented. The results of this research showed that in both moderately and extensively speeding sites all forms of law enforcement treatments reduced the mean speeds and speeding significantly. In the moderate-speeding site, Trailer+Police reduced the mean speeds more than the other treatments in both lanes. It reduced the mean speed of free flowing cars in median lane by 8.4 down to 48.6 mph while the other law enforcement treatments reduced it by 6.1 – 6.4 mph. In the extensive-speeding work zone, Trailer+Police and the SPE reduced the mean speeds similarly and more than Police as they reduced the mean speeds in the median lane by 7.8 mph down to 55.9 mph. In terms of speeding and excessive speeding (speeding by more than 5 mph), in the moderate-speeding site, Trailer + Police was more effective than the other treatments. But in the extensive-speeding site, all the law enforcement methods were similarly effective in reducing the speeding; however, 11% to 16% free flowing cars were still excessively speeding in median lane.

TRIS Files:

HRIS

Report Numbers:

09-3651

Media Type:

DVD

Pagination:

13p

Authors:

Hajbabaie, Ali

ahajbab2@uiuc.edu
University of Illinois, Urbana-Champaign

Benekohal, Rahim F

rbenekoh@uiuc.edu
University of Illinois, Urbana-Champaign

Chitturi, Madhav Vijaya

mchitturi@wisc.edu
University of Wisconsin, Madison

Wang, Ming-Heng

mwang4@ku.edu
University of Kansas, Lawrence

Medina, Juan C

jcmedina@illinois.edu
University of Illinois, Urbana-Champaign

Monograph Accession #:

01120148

Publication Date:

2009

Conference:

Transportation Research Board 88th Annual Meeting

Location: Washington DC
Date: 2009/1/11 to 2009/1/15
Sponsors: Transportation Research Board

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 USA

Availability:

Find a library where document is available

Order URL: http://worldcat.org/oclc/6

Features:

Figures (3) ; References (14) ; Tables (3)

Index Terms:

Police patrol; Radar; Safety; Speed limits; Traffic law enforcement; Traffic speed; Work zone safety; Work zone traffic control

Subject Areas:

Highways; Safety and Human Factors; I83: Accidents and the Human Factor

Last Modified:

Mar 13 2009 6:36AM