EN 50436
CENELEC alcohol interlock standard / From Wikipedia, the free encyclopedia
EN 50436 is a series of European Standards for ignition interlock devices (also called 'alcohol interlocks') on motor vehicles.
An alcohol interlock consists of two main components: an instrument that measures breath alcohol via a mouthpiece inside the vehicle, and a control unit (normally installed under the dashboard) which controls the current supply to the vehicle's starter relay. The alcohol interlock prevents the motor from starting if the driver has an alcohol concentration above a predetermined threshold. The installation is possible in different types of vehicles, including passenger cars, buses, transporters, motorcycles, and trains.
An alcohol interlock may be installed in a vehicle:
- as a general preventive measure for traffic safety, on a voluntary basis or as legally required (for example, in vehicles for transporting children);
- as ordered by a court or an administrative authority as part of a programme for drink-driving-offenders;
- for persons subject to a medical or rehabilitation programme.