When is passing vehicles in the left lane permitted?

Passing vehicles in the left lane is permitted when the street has two or more lanes in your direction. This scenario allows for more efficient traffic flow, as slower-moving vehicles can stay in the right lane, while faster-moving vehicles can safely pass in the left lane.

In situations with multiple lanes, the left lane is typically designated for overtaking and passing slower vehicles. This practice helps maintain a smooth flow of traffic and reduces the chance of accidents that can occur from trying to pass on the right in a single-lane scenario.

Other options do not align with safe driving practices. When a street has only one lane, passing is typically not allowed, as it poses a significant risk to both the driver and oncoming traffic. Passing only at traffic lights is not practical, as it doesn't provide the opportunity to maneuver effectively in a multi-lane environment. Lastly, the idea of passing always, regardless of lanes, disregards important safety regulations and can create dangerous situations on the road.