Drink driving
People these days drink and drive more and more everyday the main reason of this is because people don’t know when they are over the limit and what they have to drink in order to be over the limit.
Alcohol in the body can be measured in the breath, blood or urine. A driver will be found guilty of drink-driving if he or she has more than:
35 microgram’s of alcohol in 100 milliliters of breath;
80 milligram’s of alcohol in 100 milliliters of blood;
107 milligram’s of alcohol in 100 milliliters of urine.

On average, 3,000 people are killed or seriously injured each year as a result of drink-driving. Each year this amount is increasing especially when people carry on drink and driving.
http://www.lawontheweb.co.uk/crimedrinkdriving.htm