Article 41

Audible and visual warnings

1. The use of audible warning devices is permitted only:

(a) In the event of an emergency, to prevent an accident,

(b) outside built-up areas, when passing another vehicle, to alert the driver of the vehicle ahead, if necessary,

(c) when persons who are in danger or in immediate need of medical assistance are being transported by vehicle.

2. The use of sound-producing instruments should not be prolonged beyond what is absolutely necessary.

3. At night, drivers of motor vehicles may use the light signals specified in paragraph 4 of Article 40, concerning the rules for the use of vehicle lights, instead of audible warnings.

4. The driver of a school bus or a vehicle used to transport people with disabilities must keep the flashing warning light system on for the duration of boarding or alighting.

5. Drivers of motor vehicles, except when the vehicle is stationary, are permitted to activate the emergency lights (hazard warning system), only when third parties are at risk from their own vehicle.

6. A violation of paragraph 1 is classified as Category E1-A, and violations of paragraphs 2 through 5 are classified as Category E1-B.