What is the best practice when driving in foggy conditions?

Driving in foggy conditions significantly affects visibility, making it essential to adopt safe practices to navigate effectively. Reducing speed is crucial as it allows for greater reaction time to any unexpected obstacles or changes in road conditions that may become visible only at the last moment. In addition to slowing down, using fog lights—if available—can enhance visibility during foggy weather. Fog lights are designed to illuminate the road directly in front of the vehicle without reflecting light back into the driver's eyes, which is a common issue when using standard high beams in fog.

Utilizing high beams in fog can create a glare that makes it harder to see, as the light reflects off the water droplets in the fog, creating a 'white wall' effect. Maintaining the posted speed limit does not account for reduced visibility and may lead to unsafe driving conditions in fog. Following closely behind another vehicle can also be hazardous, as it minimizes the distance needed to react and stop if the leading vehicle slows down or stops suddenly. Therefore, adopting a cautious approach by reducing speed and utilizing fog lights offers the best strategy for maintaining safety in foggy conditions.