Patent ID: 8477025

Claim:
A vehicle ( 1 ), in particular a lorry or bus, provided with a device for issuing, in the event of the vehicle turning off, an acoustic warning signal in the direction of a warning region next to the vehicle, the device comprising: at least one sound source ( 9 , 17 ) for generating an acoustic warning signal; control means for switching on the sound source when the vehicle ( 1 ) turns off or is about to turn off; characterized by: at least one sound director ( 8 , 20 , 22 , 25 , 27 , 30 ), which is connected to the sound source, for sending the acoustic warning signal to the warning region in substantially one or more preferred directions with respect to the vehicle and attenuating the acoustic warning signal outside the warning region in the remaining directions with respect to the vehicle, and in that the sound director has at least one outlet ( 10 , 21 , 23 , 24 , 26 , 28 , 31 ) which is formed at a distance from the vehicle wall such that the warning signal is amplified in the aforementioned one or more preferred directions as a result of interference as a consequence of reflection against the vehicle wall.