Under what condition is it legal to pass on the right?

Passing on the right is legal in situations where the vehicle ahead is signaling a left turn. This scenario allows for safe maneuvering because the driver intending to turn left is required to position their vehicle toward the left side of the roadway. When they do this, it creates a clear opportunity for vehicles traveling straight or those wishing to pass to safely use the right side of the road.

Passing on the right prevents lengthy delays and enhances traffic flow, as long as it is performed carefully and without endangering other road users. It's crucial to ensure that there is sufficient space and that the action can be executed without causing a dangerous situation.

In contrast, passing on the right is not generally permissible in situations that do not meet these criteria. For example, passing on a one-lane road with no turning vehicles would not provide the same level of safety. Moreover, some roadways do not allow passing on the right due to their design and traffic regulations. Understanding these conditions helps drivers make better decisions on the road.