If your headlights go out while driving, which action is recommended?

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When headlights fail, the priority is to warn other drivers while you safely move out of the main flow of traffic. Turning on the emergency flashers makes your vehicle visible from all directions and clearly signals that you’re in trouble or moving unusually slowly. That broad, unmistakable warning helps others slow down and pass with more caution, reducing the risk of a collision as you find a safe place to stop.

Safely pull over to a well-lit, shoulder-free area as soon as you can, then reassess the situation or seek help. The other options don’t provide the same broad warning or visibility: turn signals are meant to indicate turning or lane changes, fog lights aren’t helpful for a general headlight failure and can be ineffective or distracting, and high beams don’t address the loss of headlights and can blind other drivers. Hazard lights are designed for exactly this kind of roadside or malfunction scenario.