The SDLP's Pat Ramsey spoke of how he lost his younger brother and sister-in-law in 1995 in an accident caused by a drink driver.

BBC: Driving under the influence

Under the new laws, even one medium-sized drink can land a driver in trouble.

ECONOMIST: New laws on drink and smoking

Today, Americans expect the "designated driver" to social events where alcohol is served will not drink, but 25 years ago, before Harvard's "The designated driver is the life of the party" campaign, this was not the case.

CNN: Ethicist: Health bans and 'sin taxes' can easily backfire

McDonald, a coach driver for 40 years, admitted dangerous driving and drink driving.

BBC: Coach driver Lewis McDonald jailed for Penley terror trip

Bernoldi is backed by Austrian energy drink company Red Bull, which first sponsored him as a Sauber test driver and then in his move to Arrows.

BBC: Button cleared for BAR tests

These included a 20-year-old drunk-driver stopped in Glasgow who already had three cases pending for drink-driving and a 28-year-old woman stopped in Ayr who was found to be almost four times the legal limit.

BBC: NEWS | UK | Scotland | Learner caught over drink limit