When is overtaking and passing to the right not permitted?

Overtaking and passing to the right is generally not permitted when off the paved portion of the highway. This is because driving on unpaved surfaces can be dangerous and unpredictable, potentially leading to loss of control of the vehicle. Furthermore, maneuvering on the unpaved areas can pose risks to other drivers, particularly if they are not expecting a vehicle to emerge from that space. Safety is paramount when it comes to passing other vehicles, and remaining on the paved portion provides a more controlled environment for both the driver and others on the road.

In the context of this question, the other scenarios, such as driving in residential areas, approaching a traffic signal, or driving at night, may have specific regulations or conditions that warrant caution but do not universally prohibit passing to the right as effectively as being off the paved portion does.