AGO 1959 NO. 21 >
(1) A school bus cannot be loaded or unloaded without the use of the prescribed stop sign even though the bus can be driven off the road or right of way. (2) School buses must use the prescribed stop sign in unloading and loading either at the school or other places in the city. (3) A school bus cannot be stopped for the purpose of loading or unloading children in the main traveled right lane with the stop sign extended even where it is possible to drive the bus off the road.