British Government will trial in Bristol and in the West Midlands the “dashboard breathalyser” device which is designed to stop cars being started if the driver is over the legal alcohol limit.

Known as an alcolock, the electronic device is installed in a car. Before drivers are allowed to turn on the ignition they have to take a breath test in order to check their blood alcohol concentration.

If the breath test reveals that BAC is too high, the alcolock is activated and it is impossible to start the car.

Many states in the US and Canada have introduced the alcolock, and an alcolock trial is currently under way in Sweden.

From Ananova.