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Identifier	Thesis 2082
Author	Boulter, Nicholas J., 1972-
Title	The effects of radar trailers on reducing speeding
Publisher	Central Connecticut State University
Date	2010
Resource Type	Master's Thesis
Notes	The Simsbury Police Department employed the use of “radar trailers” to increase compliance to speed limits and attempt to reduce the number of traffic accidents related to speeding. A radar trailer is a self-contained speed measuring device mounted on a vehicle trailer. It displays the posted speed limit with a changeable standard traffic control speed limit sign and the speed of a vehicle that is monitored by the radar. The purpose of the radar trailer is not for enforcement, but to reduce speeds and increase compliance by alerting drivers of the speed limit and the driver’s current speed. This thesis examined the effects of radar trailers in decreasing the average speed of motor vehicles as well as the percentage of drivers who were excessively exceeding the posted speed limit. The study employed a quasi-experimental design to study the effects of radar trailers. That is, radar trailers were deployed at two separate locations in Simsbury, Connecticut. At each site, a seven day traffic study was performed to determine normal traffic volume and speeds for each direction of travel. The radar trailer was deployed immediately after the seven day traffic study, visible for traffic in one direction only. The volume and speeds for both lanes of travel were recorded while the radar trailer was deployed. After seven days of deployment, the radar trailer was removed and the traffic study equipment recorded activity for an additional seven days. This method allowed for the analysis of changes in traffic patterns before, during, and after the deployment of radar trailers. The presence of the radar trailer significantly reduced the average speed of vehicles traveling toward the radar trailer in both settings. The average speed reductions were approximately 3 miles per hour in the 35 miles per hour zone (Site #1) and 1 mile per hour in the 25 mile per hour zone (Site #2). More interestingly, there were significant reductions in the percentages of excessive speeding (10 miles per hour or greater over the posted speed limit) at both sites. Surprisingly, the radar trailer did not have a significant effect on the average speed of vehicles traveling away from the radar trailer. There was a slight decrease in average speed of vehicles traveling away from the radar trailer in the 35 miles per hour zone (Site #1), but there was no decrease in the 25 miles per hour zone (Site #2). Previous studies indicated a limited residual effect once the radar trailer was removed. Surprisingly, there were no residual effects at either study site when the radar trailer was removed. The average speeds for the one week period after removal of the radar trailer returned to the average speeds before deployment of the radar trailer. The overall conclusion of the study was that radar trailers can be an effective tool in decreasing the amount of motorists speeding but has limited short-term effects. Police departments using radar trailers should place them in locations with significant speeding problems and keep them in place for long periods of time.
Subject	Speed limits -- Connecticut -- Simsbury Automobiles -- Connecticut -- Simsbury -- Speed Automobile drivers -- Psychology Radar in speed limit enforcement -- Connecticut -- Simsbury
Department	Department of Criminology and Criminal Justice
Advisor	Cox, Stephen M
Type	Text
Digital Format	application/pdf
Language	eng
OCLC number	694182602
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