Detection of vehicles for all purposes of traffic data acquisition as a component for: Vehicle Counting, Average Speed Assessment, Length classification, Presence Detection, in traffic data acquisition systems.

The detectors can be mounted directly over the observed lane on a gantry, overpass or bridge or alternatively on a pole at the roadside. A multi channel PIR detector can replace a pair of inductive loops without the need to dig trenches or disrupt the traffic flow. Owing to the true presence capability, the detectors can operate accurately under all conditions including heavy traffic and congestion down to stand still.

Multi zone, multi channel PIR detection with intelligent logic enables the detectors to count, measure the speed and length of a moving vehicle and to detect the presence of a stationary vehicle.

Standard output is by two-way communication between several detectors and the data collection module over a single RS 485 data bus. Internal data buffer stores the relevant information for all detected events within the selected call interval. Self-check of the detection channels gives a fault output under defined conditions. Standard mounting hardware is supplied for quick, stable and easy installation.