Currently, the UK is being urged to lower the drink-driving limits from 80mg per 100ml of blood to 50mg per 100ml of blood, bringing it in line with Scotland.
Many sensible people do watch their alcohol intake carefully if they know they'll be getting behind the wheel that night, but a dangerous pitfall is driving the morning after - the assumption that you will have slept off the effects of alcohol is false, and can lead to nasty situations.
But how can you cure a hangover to ensure your safety?
AlcoDigital disputes the top five myths of recovering from a hangover:
- A big, greasy fry-up in the morning: "A big breakfast will temporarily take away the empty feeling in the stomach, but nutrients are what's needed, rather than fat. Think fruit juice and eggs instead."
- Drinking coffee: "Alcohol dehydrates the body and coffee is a diuretic, meaning that it encourages the kidneys to excrete water, adding to the dehydrating effect. Water - and plenty of it - is what's needed."
- Hair of the Dog: "Another drink in the morning is foolhardy and may delay the onset of more hangover symptoms, a reminder that you drank too much in the first place!"
- Eating Before Bed: "A meal after a drinking session won’t help the body to absorb or metabolise the alcohol as it's already too late."
- Taking painkillers while drinking: "It's always a bad idea to mix alcohol and pills - and it won't lessen the headache the next day."
Hangovers are caused by a number of factors - mostly dehydration - and can vary due to gender, body type and size.
One of the best hangover-busters is to alternate drinking alcoholic and soft drinks during the night to lessen the dehydrating effects.
But using a personal breathalyser is the only way to be certain that you’re not still over the limit the following day.
Suzannah Robin, sales and training director of AlcoDigital, said: "The consequences of driving while still over the limit at any time can't be underestimated and too many drivers rely on outdated notions to guess when their blood alcohol levels are within limits the next day."
Want to avoid a hangover altogether? Check out our guide for the most headache-friendly drinks.