Drink driving in US and UK

Drink driving is the act of driving while under the influence of alcohol:
Although more breath tests for drink driving were given, the number of positive results dropped.
Drink driving is also called drunk driving.
It is illegal to drive in the US and US if you have drunk more than the legal limit of alcohol. If the police stop you when you are driving and believe that you may have drunk too much alcohol, they will usually breathalyse you (= test your breath using special equipment) to find out how much alcohol you have drunk.
In the US and the UK, drink driving is considered a very serious crime, for which you can be put in prison, lose your legal right to drive, or have to pay a large fine (= money you pay as a punishment) . There are many advertisments, especially during the Christmas period, that try to persuade people not to drink and drive. Some large cities offer free transportation on New Year's Eve so that people will not drive drunk.

The breathalyser (also drunkometer in informal Am. Engl.) is an apparatus used by the police to measure the amount of alcohol that the driver of a car has drunk. In many countries it is illegal to drive after you have drunk more than a legal limit of alcohol.

MADD is an abbreviation which stands for Mothers Against Drunk Driving; a US organization started by a woman whose daughter was killed by a driver who was drunk. It has been successful in bringing the problem of drunk driving to people's attention in the US, and in encouraging the government to make stronger laws against it.