How long before it’s safe to drive after drinking alcohol?

Many people will do a quick calculation to work out how long they have to wait before they can drive safely after drinking alcohol. The trouble is that it’s an imprecise science. People often miscalculate and drive while still over the legal limit. Sometimes they overestimate their ability to recover and underestimate the strength of their drinks. This is especially true of older drivers who often don’t realise that wines and beers tend to have much stronger alcohol content that they did 30 years ago. This video outlines how long it take before it’s safe to drive depending on how many drinks you have. The results may be surprising. The time is likely to be much longer than you think.