Alabama State Law for School Bus Stopping
You must stop when you are following or meeting a school bus or church bus stopped on the road while the stop signal arm is extended and displaying flashing red lights. Remain stopped until the stop signal is retracted and red lights are turned off. You should also stop when meeting or following a school or church bus which is stopped on a four to six lane undivided highway. A stop is not required on a divided highway having four or more lanes which permits at least two lanes of traffic to travel in opposite directions when meeting a school or church bus which is stopped in the opposing roadway or if the school or church bus is stopped in a loading zone which is a part of or adjacent to such highway and where pedestrians are not permitted to cross the roadway.