Ireland is considering introducing them as a sentencing option in drink-driving convictions, a measure recommended this week in the US.

In the new Road Traffic Bill signed off by the Government this week here, some specific extra measures target drink-drivers, For example, blood samples can now be taken from an unconscious driver following a serious road traffic accident – and tested when they can give their consent. Non-technological tests – such as being able to walk a straight line, dilation of pupils (denoting drug use) – will also be allowed as evidence in court.