In a fog, what should you use to signal your presence once your vehicle is on the shoulder?

When you find yourself on the shoulder of the road in foggy conditions, using flashers or flares is the best way to signal your presence. Flashers provide a visual alert that can be seen by other drivers, making it clear that your vehicle is stationary. This is particularly important in fog, where visibility is significantly reduced, and other drivers may not see your vehicle until it’s very close.

Flares can also be highly effective as they create a bright, noticeable light that can attract attention from a distance. They serve as an additional warning to oncoming traffic, further enhancing the safety of your situation. In contrast, relying solely on headlights might not be as effective since they can be obscured by fog, and may not alert others adequately to your presence. Photography lights are not generally used for signaling on the road and would not provide the necessary visibility or warning. Horn signals, while they may alert nearby drivers, do not offer the same level of visibility as flashers or flares and may not be effective in distant or noisy conditions.

Using flashers or flares helps ensure that your vehicle is visible to others, significantly enhancing safety for both you and passing drivers in poor visibility conditions.