Abstract: Apparatus is described for recording certain operating conditions of a motor vehicle, those conditions occurring upon the braking of the vehicle, and the apparatus is particularly applicable to vehicles equipped with antilock braking systems. A shift register is controlled by an oscillator in continuously shifting operation. When a predetermined driving condition occurs, the state of the first register location is changed. In the event the device is used for recording a braking condition, there is provided a time delay switch which locks the shift register at the point it has reached when a predetermined delay time is exceeded. The aforementioned shift register can be constructed in the form of an electromechanical shift register which responds to a signal generated through the operation of a stop lamp switch.