Traffic event detection systems

Traffic event detection systems are used for safety purposes in tunnels and on highways. Systems are based on video or radar technology.

The events that such systems detect are:
– a stopped vehicle
– a vehicle driving in the wrong direction
– a pedestrian on the road
– incidental items on the road
– significant decrease in visibility
– fire (still does not replace a fire alarm system)
– change in the average speed of the traffic flow (not applicable to a single car)