4.5.1. "Rain sensor"
At will on the car the so-called "sensor of a rain" can be installed. It is installed on windshield inside. Two optoelectronic elements react to force and intensity of a rain and issue the command for increase (reduction) in frequency of operation of a screen wiper. The sensor is activated by the screen wiper combined by the switch of management, driving beam and the index of turns. The driver can always watch more with concentration the road if the problem of good visibility for him is solved by the "rain sensor". New Mercedes of the E-class — the first serial car supplied with such system.