School buses carry our communities most precious cargo. Please drive, ride etc. safely around buses but especially when they are stopped. In Colorado, all motor vehicles, including bikes, must stop when a school bus has its red lights on and stop sign extended. Buses will flash yellow hazard lights in preparation for stopping to allow kiddos to get on and off the bus. The lights will flash red and a stop sign extends while children are in motion. Please be patient around buses Boulder. Our kid's safety is worth it.