The permanent test and demonstration polygon allows the sensor and sensor system long-standing evaluation. The polygon enables the test of sensor hardware functionality and the sensor software recognition abilities at a variety of external weather conditions. The condition of permanent tests enables accumulating consistent data on the change in the operation of each sensor and the sensor system under conditions as rain, snow, fog, very low and very high temperatures, which is impossible in the usual test climate chambers. In addition the polygon allows simulation of various scenarios under different environmental conditions and test functionality of the system, the identification of problems and consequently improves the sensors and/or system vulnerabilities.