Multiple Lane Speed Enforcement


Automated enforcement of speed violations has been widely credited with contributing to fatality reductions overseas. This technique is not in common use today in the United States. It has proven to be controversial and politically unpopular in some jurisdictions that have applied it, although progress has been made in gaining acceptance of the technique. Despite these issues, the experience of the international community with this enforcement technique has demonstrated that sustained and intensive enforcement, rationally organized and managed, can alter driver behavior sufficiently to product worthwhile systemwide safety improvement.

Successful speed management initiatives in other countries are of high visibility, are long term, target major portions of the road network, sometimes use intensive enforcement methods, and monitor progress toward publicly declared speed and crash reduction objectives. No U.S. speed management program in operation today is comparable in scale, visibility, and high level political commitment to the most ambitious speed management programs in other countries. The evidence from numerous research studies, synthesized in several credible reviews, is that reducing the mean speed on a road reduces injuries and fatalities in crashes on the road. Speed reductions reduce casualty risk. Automatic enforcement is a very efficient method of accomplishing speed reductions. And at the same time the enforcement equipment can be used to identify vehicles of interest including stolen vehicles and amber alert vehicles.

TDS offers a multiple lane high speed system for implementation on highways. Here the system not only provides for speed enforcement but also provides data for real time detection of vehicles of interest based on their license plates. This can include stolen vehicles and amber alert vehicles as well as vehicles of interest to Homeland Security. The system uses advanced radar and high speed digital cameras with IR LED flash illumination. A complete system of cameras can provide coverage across up to three lanes of a freeway. The system can be netted to provide for daily updates of the vehicles of interest and can provide immediately alerts when vehicles of interest pass the checkpoint. It can also be provided with a WIFI interface to connect to enforcement vehicles downstream from the capture point. The system requires only one gantry.

The system uses a single radar to cover up to three lanes simultaneously. Individual cameras and illuminators provide for front image capture on each of the lanes. Violations can be forwarded to a central server for processing to include license plate reading and make and model determination. These results can then be used for querying the appropriate motor vehicle department to establish ownership of the vehicle and to confirm that the make and model are consistant with the registration.

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