That means you will see school buses full of kids on the roadways again. JerryX JerryXIt never fails any time throughout the school year, when you are driving, and you see someone drive right past a school bus with the stop sign out. Get our free mobile appWhen to Stop For School Buses in Indiana:First off, it is ILLEGAL to run a school bus stop sign. However, there ARE times when you can proceed past a school bus with its stop sign out in Indiana. Here's when to stop and when not to stop for school buses in Indiana, according to a recent Facebook post from the Indiana State Police Evansville District:When a school bus stops and has its red lights flashing with the stop arm extended, you must stop.