Abstract: The present invention relates to a vehicle, 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, comprising: —at least one sound source for generating an acoustic warning signal; —at least one sound director, 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, —control means for switching on the sound source when the vehicle turns off or is about to turn off; wherein the sound director has at least one outlet which is formed at a distance from the vehicle wall such that the warning signal is amplified in the one or more preferred directions as a result of interference as a consequence of reflection against the vehicle wal

Abstract: The present invention relates to a vehicle, 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, comprising: —at least one sound source for generating an acoustic warning signal; —at least one sound director, 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, —control means for switching on the sound source when the vehicle turns off or is about to turn off; wherein the sound director has at least one outlet which is formed at a distance from the vehicle wall such that the warning signal is amplified in the one or more preferred directions as a result of interference as a consequence of reflection against the vehicle wal

Abstract: The present invention relates to a safety device for emitting a substantially tonal acoustic alarm signal, the device comprising:—a sound source for generating an acoustic alarm signal,—directing means for directing the alarm signal in substantially one or more preferred directions and attenuating the alarm signal in the other directions. The invention also relates to a method for emitting a substantially tonal acoustic alarm signal, comprising of:—generating an acoustic alarm signal,—directing the alarm signal in substantially one or more preferred directions and attenuating the alarm signal in the other directions.