October 13, 2021

About speed measurements with follow-up video ("video car")

In the case of a video tracking measurement, the measuring police car, which is often not recognizable as such, follows the car to be checked for a distance of at least 300m. Often it is a civilian vehicle of the middle class or upper middle class category. A video camera is installed inside the police car together with a display with various information e.g. on speed presented.

The video camera records and saves the drive in pursuit, a computer connected to the speedometer of the measuring car determines the average speed traveled on the route in pursuit. The concept: if the distance to the vehicle in front to be measured does not decrease or even increase, then the vehicle drives at least as fast as the measuring police car. Usually, there is a tolerance deduction of 5 km/h. 

Warning options against video measurements ("Provida")

This measurement method is regularly used in Germany on motorways, mostly installed in civil police cars of German brands of the middle and upper class.

Warning and protection with a traditional radar detector or laser jammer is not technically possible. A safe warning is only possible with the Target Blu eye device, which must be installed separately. This product scans Tetra radio waves in the vicinity and issues an alarm as soon as a Tetra radio source is nearby. Since all police vehicles in Germany, civil or recognizable as such, have a tetra radio on board, a warning can be received in this way. The Target Blueye device also warns you if you are near to a police station.

Only some countries in Europe use tetra radio systems on the side of the authorities. France, for example, does not do tetra radio. Therefore, the Target Blueye is not helpful. In other countries tetra radio is only regionally used by the police.

---

Also in Radardetector and Laserjammer - FAQ