When is it permissible to have your seat belt unfastened while driving?

Having your seat belt unfastened while reversing is permissible because the act of reversing generally involves slower speeds and limited distance traveled. It often requires more maneuverability and attention to surroundings, leading drivers to focus on their immediate environment rather than the need for safety restraints. Furthermore, many jurisdictions recognize that while operating a vehicle in reverse doesn't pose the same level of risk as driving forward at higher speeds, it's still important to be vigilant.

In contrast, having a seat belt unfastened during other driving situations—such as parking, at traffic lights, or while turning—can compromise safety significantly, leading to potential injury in the event of sudden stops or accidents, even at low speeds.