School is back in session, and along with it school zone speed limits and school bus traffic.  Do you know when to stop for a school bus?  Guessing wrong is dangerous and costly -- a minimum $250 fine plus insurance penalties.

The bottom line -- unless you are on the other side of a divided highway with curbed median, come to a safe and complete stop when a school bus has its "STOP" sign out.  This is the rule regardless of whether you are following the bus or traveling in the opposite direction.  These pictures from the School Bus Drivers of Arizona show you how it's done.  

As school starts up, be safe - look for kids crossing and mind school zones.