A method of detecting a state of a road surface based on a certain distance with an ultrasonic sensor value sensor array driver assistance system motor vehicle and

The invention relates to a method for detecting a state of a roadway (8), wherein by means of an ultrasonic sensor (4) of a motor vehicle (1), an ultrasonic signal is emitted and the ultrasonic signal reflected from an object is received, and in which by means of a control device (5) is determined based on a time duration between the transmission of the ultrasonic signal and receiving the reflected ultrasonic signal at least one distance value (a) and the state of the roadway (8) on the basis of at least one distance value (a) is detected, wherein the ultrasonic signal (4 by means of the ultrasonic sensor ) is emitted in a direction of a Aufschleuderbereichs (13) in which, when located on a surface (7) of the track (8) befindendem water (12) (at least part of the water (12) during the rolling of a wheel (6) of the motor vehicle 1) is spun.