In very poor weather, how should you adjust the three-second rule for following distance?

In very poor weather conditions, such as heavy rain, snow, or fog, visibility and traction are significantly reduced, which can greatly affect stopping distances and reaction times. The three-second rule is a guideline that helps drivers maintain a safe following distance under normal conditions, allowing them enough time to react to the actions of the vehicle ahead.

When weather conditions worsen, it is vital to increase the following distance to account for the increased stopping distance required on slippery surfaces. Tripling the three-second rule to nine seconds provides a safer buffer, allowing for additional time to react and stop safely if necessary. This adjustment helps ensure that a driver has adequate time to respond to unexpected situations that could arise in adverse weather, reducing the likelihood of collisions.