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 method for a system unit, designed as a stationary traffic monitoring system and/or as a motor vehicle, for monitoring a detection region of a traffic area and/or designed for communication, the system unit having at least the following features:

• a) a first data transmission interface for receiving and/or transmitting first vehicle-relevant and/or traffic management-relevant data via a first wireless transmission medium, the first wireless transmission medium being designed as an optical interface, and
• b) a laser scanner which is aligned with the detection region and is designed to provide a laser measurement value which comprises information about a vehicle located in the detection region, and/or
• c) a second data transmission interface for receiving and/or transmitting second vehicle-relevant and/or traffic management-relevant data via a second wireless transmission medium, the second wireless transmission medium being designed as an optical interface, wherein
• d) the first data transmission interface is operated with a polarized transmitted light beam, and
• e) the laser scanner is operated with a polarized transmitted light beam, and/or
• f) the second data transmission interface is operated with a polarized transmitted light beam,
• g) wherein
• the polarization plane of the polarized transmitted light beam of the first data transmission interface,
• is different from the polarization plane of the polarized transmitted light beam of the laser scanner and/or the polarized transmitted light beam of the second data transmission interface.