Should slow vehicles use the left-hand lane except when passing or making a left turn?

The correct answer is that slow vehicles should not use the left-hand lane except when passing or making a left turn. This is because the left-hand lane is typically designated for faster-moving vehicles. By restricting slow vehicles from using this lane, it allows for smoother traffic flow and reduces the risk of accidents. The emphasis is on maintaining the efficiency of road use; when slower vehicles remain in the right lane, it enables faster vehicles to pass and reduces congestion.

In many driving situations, especially on highways, it's important for drivers to be aware of lane usage. The left lane being primarily for overtaking means that slow vehicles could hinder the ability of others to pass, leading to frustration and potential danger. Thus, keeping slow-moving vehicles out of the left lane (unless they are actively passing or turning left) aligns with road safety regulations and promotes a more orderly driving environment.