Fog is like a cloud at ground level that has the potential to cause visibility issues. It consists of condensed water droplets suspended in the air. Fog can be caused by different conditions, such as a warm air mass passing over a cold surface (called “advection fog”) or cold air passing over warmer water or moist land (called “evaporation fog”). Fog is most common in the spring and fall.
Because it reduces visibility, especially in the case of dense fog, it can be a hazard to drivers.
It’s best to avoid driving in fog, so try to delay any car trips if it’s called for in the forecast. But if you find yourself on the road in dense fog, here are some tips to help you stay safe.
If you’re caught driving in heavy fog
- If your vehicle is equipped with fog lights, be prepared for driving in fog by familiarizing yourself with how to turn your fog lights on and off.
- Get off the road as soon as possible. Stop in a safe parking area, turn on your hazard lights and wait until the fog lifts to resume your trip.
- If you don’t have fog lights, use your low beams. Your high beams will reflect off the droplets in the fog, interfering with visibility.
- Don’t speed up to pass other vehicles. Maintain a greater distance between you and the vehicle ahead of you so that you have extra distance to brake safely.
- Use your defroster and wipers to help you see what is around you as much as possible.
- Eliminate distractions, such as the radio, so that you can concentrate fully on driving.