In what scenario can you legally pass another vehicle on the left?

Passing another vehicle on the left is permissible when the other vehicle signals that it is about to turn. This indicates that the driver is making their intention clear and likely moving into the right lane, creating an opportunity for you to safely overtake them. The use of turn signals is a vital part of safe driving as it informs other road users of one's intentions, thus facilitating smoother traffic flow and reducing the risk of accidents.

In contrast, passing on the left is not allowed simply because a vehicle is driving below the speed limit, as speed alone isn't a sufficient reason to overtake. Additionally, if a vehicle is approaching a stop sign, it is often in the process of coming to a halt, which makes overtaking unsafe. Finally, being in a hurry does not justify any overtaking maneuver and could lead to reckless driving, especially if it disregards traffic laws, safety protocols, or the indications given by other vehicles on the road.