The main EU rules on driving hours are that you must not drive more than: 9 hours in a day - this can be extended to 10 hours twice a week. 56 hours in a week. 90 hours in any 2 consecutive weeks.

For commercial drivers (heavy goods vehicles and buses) in the UK, the standard daily driving limit is 9 hours. This can be increased to 10 hours a day, but only twice in any fixed week. All drivers must take a mandatory break of at least 45 minutes after no more than 4.5 hours of driving. Furthermore, the weekly driving limit is capped at 56 hours, and the total fortnightly driving time cannot exceed 90 hours. These rules are strictly enforced via digital tachographs to ensure road safety and prevent driver fatigue. For private car drivers, there are no legal "maximum hours" per day, but the Highway Code strongly recommends taking a 15-minute break every two hours and avoiding more than 8 to 10 hours of driving in a single day to maintain alertness. It is a peer-to-peer essential to remember that even if you aren't a commercial driver, "driving while tired" can lead to dangerous situations and potential prosecution for careless driving.