What is the rule regarding using headlights during inclement weather?

Using headlights during inclement weather, such as rain, fog, or snow, is essential for ensuring safety on the roads. The purpose of headlights in these conditions is to improve visibility, both for the driver and for other road users. When visibility is reduced due to adverse weather, having your headlights on makes it much easier for others to see your vehicle, helping to prevent accidents.

In rain, headlights help illuminate the road and make it easier to see wet surfaces, which can be slippery. During fog, the beam from standard headlights may reflect off the moisture in the air, making visibility worse, but using low beam or fog lights can still help others see your vehicle. In snow, headlights can help in visibility as well as in making your vehicle more conspicuous against a white background.

It's important to understand that relying solely on daytime running lights (if equipped) may not suffice in these conditions since many models do not activate the tail lights, which are crucial for visibility from behind. Therefore, the recommendation to use headlights during foul weather is a critical safety practice.