What should drivers do during a heavy downpour with limited visibility?

During a heavy downpour with limited visibility, pulling off the road and waiting is the safest course of action. Reduced visibility can significantly impair a driver's ability to see other vehicles, road signs, and potential hazards. By pulling off to a safe area, such as a parking lot or a designated rest area, drivers can avoid the risk of accidents that might occur from attempting to navigate through the adverse weather conditions.

While continuing to drive slowly might seem like a viable option, it can still lead to dangerous circumstances, such as hydroplaning or collisions with other vehicles that might also be experiencing difficulties. Using high beams is often counterproductive in heavy rain, as the light can reflect off the water droplets and further reduce visibility. Attempting to drive through the rain quickly poses a significant risk, as it can lead to loss of control of the vehicle and increase the likelihood of accidents.

Therefore, finding a safe place to pull off the road and waiting until conditions improve is the most responsible and safest choice for drivers during such severe weather events.