When is it safe to reverse onto a main road from a minor road?

Reversing onto a main road from a minor road is never considered safe. Main roads are typically busier and have higher speed limits, which increases the risk of accidents. Vehicles on main roads are often moving at a faster pace, and by reversing onto such a road, a driver may not be able to accurately judge the speed and distance of oncoming traffic. Furthermore, reversing can reduce the driver's ability to react to unexpected situations, such as other vehicles or pedestrians.

Making such a maneuver can lead to collisions, not just endangering the driver but also other road users. It is generally advised to find a safer alternative, such as turning around in a suitable area, to join a main road. Safe driving practices prioritize the well-being of all road users, and avoiding reversing onto main roads is a fundamental rule in driving safety.