Speed Trailer

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Speed Trailer

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Police: Speed Trailer




On October 22, 2004 the Hoffman Estates Police Department purchased a Galaxy-SST speed trailer from Decatur Electronics. This speed trailer is set up and monitored by officers assigned to the Traffic Section of the Police Department. The purchase of this trailer now gives us the opportunity to monitor traffic activity in different locations throughout the Village, but keeps the uniformed officers free to handle other assignments.

The Galaxy-SST speed trailer has a one way directional radar unit mounted just below the large numeric display. The numeric display shows the speed of the vehicle that is passing through the radar beam. The numeric display is capable of flashing when a vehicle reaches a certain speed that is programmed by the officer that sets up the trailer. When the numbers on the display are flashing, it indicates that a motorist is traveling at a speed that if they were actually stopped by an officer, they would possibly be issued a speeding citation.

Inside the trailer there is a traffic data logger that logs the speed of the vehicle along with the date and time the vehicle passed through the radar beam. The logger is capable of recording data for up to 130,000 vehicles before the information in the logger needs to be downloaded and reset. The information from the logger is downloaded to a computer and into a database. The following is a list of the most important information downloaded from the logger:

Date and time the trailer started logging vehicles

Date and time the trailer stopped logging vehicles

Posted speed limit for the roadway

Average speed of the vehicles recorded during the logging period

Maximum speed recorded during the logging period

Number of vehicles above the posted speed limit

Total number of vehicles recorded during the logging period.

The trailer is not only very helpful in determining the average speed of the vehicles on the roadway where it is placed, but it also gives an idea of how many vehicles use that roadway during the logging period. All this information for each location is kept on file at the Police Department. This information gives the Police Department the ability to determine if extra patrols are warranted at the location the trailer was placed.

The speed trailer is a tool that can be requested by Village residents to be placed at locations they deem possible problem areas for speeding vehicles.

Any questions about the speed trailer or requests for the trailer can be directed to Sgt. Julie Golden at 847-781-2846.