Explantion: The pre-crash Report found that the number of fatal collisions where alcohol was a factor was about four out of every 10. Drink driving is a killer behaviour. Drivers take the risk despite the high death rates. The RSA believes that some drivers are not considering the consequences. Otherwise, they would never ever drink and drive. Alcohol affects your judgment. Even one drink, where you may still be below the legal limit, will alter your behaviour. There is no safe limit.