Traffic surveillance system

Traffic surveillance system (1), wherein the system (1) is adapted to track and register vehicles passing a surveillance zone (2). The traffic surveillance system (1) comprises a carrying structure (3) and a plurality of traffic surveillance devices, wherein the traffic surveillance devices are adapted to be mounted upon the carrying structure (3) and comprises at least a vehicle identity registration device (4) and a vehicle tracking device (5). The surveillance zone being defined as the coverage of the devices and provided in a plane (22) from which the carrying structure (3) protrudes, wherein the surveillance zone (2) comprises a plurality of gateway zones (6) and at least one interconnecting zone (7), which interconnecting zone (7) connects at least two gateway zones (6) with each other. The vehicle identity registration device (4) is arranged such upon the carrying structure (3) that it define the gateway zones (6) in that it is adapted to record a passage of a vehicle into or out from the surveillance zone (2) through the gateway zones (6) and the vehicle tracking device (5) is arranged such upon the carrying structure (3) that it defines essentially arc shaped interconnecting zone (7).