| 摘要 |
In order to prevent rear-end collisions, a device is proposed for motor vehicles 1 which consists of a transmitter for electromagnetic waves and a receiver and an evaluation unit. The transmitter emits the waves in the direction 4 of travel and the output of the evaluation unit is connected to an optical and/or acoustic display 6 which is to be fitted in the cockpit and/or an actuator 7, the actuator 7 activating the brake system when an adjustable threshold value is exceeded. <IMAGE>
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