In fog, rain, or snow, what is the recommended headlight practice?

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In fog, rain, or snow, the priority is visibility for you and visibility of you for others. High beams create a lot of glare in those conditions because light reflects off the moisture, snow, or rain, which makes it harder to see and harder for others to see you. Using low beams directs light toward the road rather than shining straight ahead into the precipitation, reducing glare and helping you spot lane markings, shoulders, and hazards.

If your car has fog lights, they’re designed to illuminate the road surface low to the ground and can help when visibility is poor, but you should use them only when necessary and keep using low beams. Hazard lights aren’t intended for normal driving in reduced visibility; they can confuse other drivers and don’t provide the same level of visibility as proper headlights. And of course, keep your headlights on so you remain visible to others.