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Legal guide to UK motoring, sections for law enforcement, Driver licensing, learner and new drivers, buying and selling, speeding fines, owning a vehicle, wheel clamping, traffic information.


Drink Driving, driving under the influence

Check your basic knowledge on drink driving by taking our ten question quiz if you score less than eight then go to Drink Driving Explained on the menu and top up your knowledge
You can also find the latest stats showing which Area Police Forces had the most active breath testing regimes in 2009 and 2010 and how many drivers failed the test,
The section on Drugs and Driving lists the most the abused illegal drugs together with prescription drugs which can cause problems for some drivers
Your limit depends on your age, weight and height and also how tired you are. Each unit takes 1 hour to leave your system plus 1 more hour. So if you had a bottle of wine you could not drive for 7 hours without the risk of being over the limit. If you have more than that you can probably forget trying to drive to work the next morning as well. The best advice is not to drink at all when driving.

Drink Units Units Remaining
Spirit Shot 0.9 2.1
3 Spirit Shooter 2.7 0.3
Vodka/Gin/Rum + mixer 0.9 2.1
Whisky/Bourbon + mixer 1 2
Large Glass of Wine 2.1 0.9
Small Glass of wine 1.5 1.5
Alcopop 1.4 1.6
2 shot cocktail 1.8 2.2
3 shot cockail 2.7 0.3
Pint of cider 2.8 0.2
Pint of strong cider 4.8 -1.8
Pint of lager 2.3 0.7
Bottle of premium beer 1.7 1.3
Pint of Guinness 2 1
Martini 0.8 2.2
Bottle of wine 9 -6

Spot Quiz
How much do you think you know about the legal limit and punishmnets for exceeding it? Why not try our quiz and test yourself. remember that any of the questions that you get wrong could cost you dearly in the real world!

What can help speed up getting rid of alcohol from your system?

Coffee or tea
Going to the toilet

What is the current legal limit for driving in the UK?

80mg of alcohol per 100ml of blood
50mg of alcohol per 100ml of blood
100mg of alcohol per 100ml of blood

What is the maximum penalty for causing death by careless driving while under the influence of drink or drugs?

5 years imprisonment & 2 year ban
10 years imprisonment & 2 year ban
8 years imprisonment & 2 year ban

If convicted of drink driving what can your insurance premiums increase by?

5 times
4 times

How many units of alcohol in 3 174ml glasses of champagne?


How many units of alcohol are in 2 alcopops (275ml bottle, 5% alcohol)?


Apart from whether you are male or female what else can affect your reaction to drink?

How often you drink
Weight and metabolism
What you eat

Approximately how many drink drivers are prosecuted in the UK every week?


At twice the legal limit how many times are you more likely to be involved in a fatal accident?


If you drink 1 pint of strong cider how long would it be before you are under the limit?

1 Hour
3 Hours
2 hours

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