If you approach a stopped school bus with its red lights flashing on a two-lane road, you must come to a complete stop at least ________ from the school bus.

Explanation

Under South Dakota law, if a school bus stops with its red lights flashing on a two-lane road, you must come to a complete stop at least 15 feet from the school bus, no matter which direction you are traveling in. Remain stopped until the flashing red lights are turned off. On a road with two or more lanes in each direction, however, you only have to stop like this if you're on the same side of the road as the school bus.