What is the main reason to slow down in heavy traffic?

Slowing down in heavy traffic is primarily essential to avoid accidents. Traffic congestion often leads to unpredictable driving situations where vehicles may stop suddenly, change lanes unexpectedly, or pedestrians may cross in front of vehicles. By reducing speed, a driver has more time to react to these potential hazards, thus improving safety for everyone on the road.

When traffic is heavy, there is an increased chance of collisions, and slowing down allows drivers to maintain better control of their vehicle and to more accurately assess the movements of other road users. This precautionary measure helps in maintaining a safe following distance, enabling drivers to respond quickly to any sudden changes in traffic flow, ultimately reducing the likelihood of accidents. While compliance with speed limits and other factors like fuel savings can also be considerations in heavy traffic, the foremost priority should always be safety.