Drivers alerted to '100 rule' in certain weather conditions

Drivers alerted to '100 rule' in certain weather conditionsDrivers have been warned to follow the rules or face the consequencesCommentsLifestyleSophie Buchan Money and Lifestyle Writer02:54, 18 Apr 2026View 2 ImagesDrivers have been warned that they could face prision time if they don't follow certain rules(Image: Getty)Drivers are being reminded of a crucial Highway Code rule all about the number 100. And if they ignore the Code, they could be committing a criminal offence.‌As changeable UK weather often catches motorists off guard, Rule 226 of the Highway Code states that drivers need to make sure they use appropriate lights. Failing to follow these rules isn’t just unsafe, it could see you behind bars.‌It explains: "You MUST use headlights when visibility is seriously reduced, generally when you cannot see for more than 100 metres (328 feet). You may also use front or rear fog lights but you MUST switch them off when visibility improves."‌Motorists are also being pointed to Rule 236, which makes clear that front and rear fog lights should only be used when visibility is seriously reduced.The guidance warns that misuse can dazzle other road users, increasing the risk on already hazardous roads.View 2 ImagesThe Highway Code has alerted people to the '100' rule(Image: © 2018 Steven Robinson)‌It warns: "You MUST NOT use front or rear fog lights unless visibility is seriously reduced as they dazzle other road users and can obscure your brake lights. You MUST switch them off when visibility improves."These rules apply to all drivers. GOV.UK stress that "many of the rules in the Code are legal requirements, and if you disobey these rules you are committing a criminal offence."You may be fined, given penalty points on your licence or be disqualified from driving. In the most serious cases you may be sent to prison.Article continues below"Such rules are identified by the use of the words ‘MUST/MUST NOT’."In...