Driving is a skill that requires full concentration at all times – It goes without saying that you should never sit behind the wheel under the influence of drink or drugs, and should do your best to avoid any distractions when driving.
The same goes for driving when tired – Being sleepy behind the wheel can be as dangerous as being intoxicated, as it lowers your response times and causes you to become less in control behind the wheel. If you do feel tired when driving, pull over as soon as possible in a safe place, drink some strong coffee and take a quick nap while you wait for the caffeine to kick in.
Safe driving from Britannia!