The Driver and Vehicle Standards Agency (DVSA) has issued an unambiguous warning in capital letters, reminding all road users of their legal obligation to switch on vehicle lights after dark. In a post on X, formerly Twitter, the agency emphasised: "PUT YOUR LIGHTS ON AT NIGHT!"
Legal Requirements Under Rule 113
According to Rule 113 of the Highway Code, drivers must ensure sidelights and rear number plate lights are illuminated between sunset and sunrise. In most cases, headlights must also be used during the hours of darkness. The regulations define 'night' as the period from half an hour after sunset to half an hour before sunrise—a detail many motorists overlook.
When Headlights Are Compulsory
Headlights are also required when visibility is severely reduced, such as during heavy rain, fog, or snowfall. The DVSA warning highlights a growing problem with modern vehicles: automated lighting systems and illuminated dashboard displays can give drivers a false sense of security, leading them to believe their lights are fully operational when, in fact, only daytime running lights may be active. This leaves the rear of the vehicle unlit, posing a serious hazard to other road users, especially on unlit roads or motorways where approaching vehicles may not see a car until it is dangerously close.
Proper Use of Fog Lamps and Other Lights
The Highway Code also sets strict rules on light usage. Drivers must avoid using lights in a way that dazzles other road users, including pedestrians, cyclists, and horse riders. Fog lamps are frequently misused: they should only be switched on when visibility is severely reduced and turned off immediately when conditions improve. When stationary in traffic, drivers are advised to release the brake pedal once the vehicle behind has stopped, to prevent unnecessary glare.
No Excuses for Non-Compliance
The DVSA's message is clear: motorists cannot rely solely on technology. Lighting regulations are backed by law, and failing to use correct lights after dark is not just careless—it could result in legal penalties. Drivers are urged to check their lights manually before setting off, especially during twilight hours, to ensure full compliance and safety on the roads.
