When is it permissible for a vehicle to overtake or pass another vehicle?

The situation in which it is permissible for a vehicle to overtake or pass another vehicle is when there is a stopped vehicle in the same lane. This is considered safe under the right conditions since the overtaking vehicle can do so without endangering another moving vehicle or causing a collision. When there's a stopped vehicle, it indicates that the lane may be clear for the overtaking vehicle, assuming there are no other obstructions.

In contrast, stopping at a traffic signal typically requires vehicles to remain stationary and does not allow for passing. This is because all vehicles are expected to stop and wait for the signal, creating a potentially hazardous situation if overtaking were attempted at a stop signal.

If a vehicle is driving slowly, it does not automatically justify overtaking, especially if road conditions or regulations do not allow for it. The act of overtaking should always consider the safety of all road users.

Passing is also not just about whether the road is clear of aircraft; while it is essential to keep the area clear for safety, the primary consideration is whether it is safe to maneuver around the stopped vehicle. Therefore, the most appropriate scenario for safely overtaking is when encountering a stopped vehicle, allowing for a permissible action under safe driving conditions.