Beep of a truck goes back. This sound was made on computer. It is a triangular wave of frequency 1255 Hz. Easy to loop. UCS Category: BEEPVeh. Duration: 00:19.
Beep sound of a radar or assistance to reverse. The beeps become louder when the car is approaching an obstacle. This is a 1900 Hz sinusoidal beep. UCS Category: VEHCar. Duration: 00:06.