Under what conditions is passing to the left permitted?

Passing to the left is permitted on multi-lane roadways or when a vehicle is making a turn because these situations often create safe opportunities for overtaking. Multi-lane roads typically have designated lanes for passing, allowing vehicles to maneuver without the risk of causing an accident. When a vehicle is making a turn, it's common and often necessary for following traffic to pass on the left, especially if the turn requires the vehicle to enter the right lane, thereby creating a safe distance.

In this context, other choices do not accurately reflect the conditions under which passing to the left is considered safe and permissible. For example, passing on one-lane roads could increase the risk of head-on collisions, and the absence of a posted speed limit does not inherently create a safe environment for passing. Similarly, passing during hazardous weather conditions is risky and typically discouraged, as it can compromise the driver's control and the overall safety of the road. Thus, the most appropriate circumstance for passing to the left aligns with multi-lane roadways and the situation of another vehicle preparing to turn.