Trafsense®

Trafsense®’s AID functionalities – Wrong-way detection

The potentially most dangerous incident is wrong-way driving (ghost driver). It is of utmost importance to send a reliable incident alarm to the traffic control centre. Trafsense®'s > 99% reliability is proven by controlled wrong-way tests. An example is shown below together with the nominal position uncertainty in a camera-based AID system:


Example from controlled wrong-way testing in the dual lane westbound bore of the 1 115 m Lyderhorn tunnel on RV555 in Bergen (Norway): The Trafsense® system forwards the position of the wrong-way vehicle every second which makes it possible to accurately track its position. The vehicle typically moves more than 17 m per second.

A camera-based AID-system will have individual detection zones of typically 60 (or +/- 30) m. Benchmarking the Trafsense® results in the figure above against this shows that Trafsense®’s uncertainty in deciding the position of a wrong-way vehicle is significantly lower than for camera-based AID.

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