Volvo Trucks is hoping to have a working Alcolock on its stand at this year's CV Show. The unit, which can be factory fitted or retrofitted to a truck, prevents a driver from starting the engine when he is under the influence.
It is designed for companies who operate a zero-tolerance to alcohol policy, and is calibrated to 20mg of alcohol per 100ml of blood. The UK legal limit is 80mg per 100ml.