traffic signal Poland

... years of life time. Collect data in all directions on the selected lance using a single Traffic Tracker KSK-GR001 device. Magnetic Sensor This detects vehicles by measuring the change in the earth's magnetic field as the vehicles pass over the detector. Radar Sensor Radar is capable of detecting distant objects and determining their position and speed of movement. With vehicle detection, a device directs high frequency radio waves at the roadway to determine the time delay of the return signal, thereby calculating the distance to the detected vehicle.