STATIONARY TRAFFIC MONITORING SYSTEM FOR MONITORING A DETECTION REGION OF A TRAFFIC AREA AND DESIGNED TO COMMUNICATE WITH VEHICLES TRAVELLING ON THE TRAFFIC AREA, AND MOTOR VEHICLE

The present invention relates to: a stationary traffic monitoring system (112) for monitoring a detection region (115) of a traffic area and designed to communicate with vehicles (100) travelling on the traffic area; a method for a system unit, that is designed as a stationary traffic monitoring system (112) and/or as a motor vehicle (100), for monitoring a detection region (115) of a traffic area and/or designed for communication; and a motor vehicle, wherein two or more optical interfaces (D1, D2, 114) are used, which is characterised in that a) a first data transmission interface (D1) is operated with a polarised transmitted light beam, and b) a laser scanner (114) is operated with a polarised transmitted light beam, and/or c) a second data transmission interface (D2) is operated with a polarised transmitted light beam, d) wherein the polarisation plane (E1) of the polarised transmitted light beam of the first data transmission interface (D1) is different from the polarisation plane (E2, E3) of the polarised transmitted light beam of the laser scanner (114) and/or of the polarised transmitted light beam of the second data transmission interface (D2).