Traffic congestion detection algorithm for a radar freeway monitoring system

On a freeway, a sudden stop of a vehicle poses serious threat to all the road users in the following vehicles and it often leads to accidents. Due to high speed and intensity of the traffic, in such situations multiple crashes often occur. The detection of a stopped vehicle on a freeway and possibly early warning of the other drivers, that they should lower their speed and maintain caution may contribute to decreasing of the number and limiting the consequences of car crashes. In the article a structure of a system for traffic on a freeway monitoring and an algorithm allowing for detection of stopped vehicles in such system are presented.