The device uses a hand-held unit, comprising a disposal mouthpiece and display screen. The driver breathes into the device and if alcohol is detected, it cuts the current to the starter motor, fuel pump or ignition unit.
The company said that alcolock, which was introduced in Scandinavia for the first time this month, is the only one that meets the stringent demands of the ADR European dangerous goods regulations. It only requires calibrating once every year.
The Swedish government is lobbying to get such locks featured as standard throughout Europe.