Which action is most likely to lead to accidents on divided highways?

Stopping on a divided highway is an action that can significantly increase the risk of accidents. Divided highways are designed for high-speed travel, featuring separated lanes for vehicles moving in opposite directions. Stopping in such environments can create hazardous conditions, as other drivers may not anticipate a vehicle standing still in the flow of traffic. This can lead to dangerous situations such as rear-end collisions, where a driver may not have enough time to react to the unexpected stop.

While changing lanes frequently, speeding, and following too closely all contribute to unsafe driving practices on highways, stopping is particularly perilous because it disrupts the expected movement of traffic. Drivers expect vehicles to be in motion, and an unexpected stop can cause confusion and reactions that lead to crashes. Hence, stopping on a divided highway is the action most likely to lead to accidents.