How does a slow driver create a traffic hazard?

A slow driver creates a traffic hazard primarily by leading to rear-end and side collisions. When a driver is traveling significantly slower than the flow of traffic, it can catch other drivers off guard. These vehicles may not anticipate the slower speed, especially if they're unable to change lanes due to the layout of the road or other vehicles.

This unexpected difference in speed can lead to situations where faster-moving vehicles may not have enough time to react, resulting in rear-end collisions when they attempt to brake suddenly. Additionally, side collisions can occur if drivers try to switch lanes abruptly to avoid the slow vehicle, misjudging the distance or speed of neighboring vehicles. Thus, the slower driver disrupts the intended traffic flow, thereby increasing the risk of accidents in these ways.

While causing impatience in drivers, increasing following distance, and making frequent stops can contribute to driving hazards, the most direct impact on safety is the potential for collisions as a result of the speed differential.