Motorists approaching from behind when you are loading or unloading passengers with red signal lights flashing must stop at least how far behind your school bus?

When a school bus is loading or unloading passengers and has its red signal lights flashing, it is essential for motorists to stop at least 20 meters behind the bus. This distance is critical for the safety of children who are entering or exiting the bus. It provides enough space for children to move safely and minimizes the risk of accidents, as they may not always be visible to drivers if they are too close.

The 20-meter requirement is specific, as it allows for ample reaction time for both the motorist and the children. It also ensures that the vehicle's stopping distance does not interfere with the safety zone around the bus, which is particularly important in residential and school areas where children may be nearby. Overall, adhering to this distance is not just a legal requirement but a vital safety measure designed to protect the most vulnerable road users.