<P> Generally, if a stopped school bus is displaying a flashing, alternating red lamp, a driver of a vehicle meeting or overtaking the stopped bus from either direction (front or back) must stop and wait until the bus moves again or the red light is off . Police officers, school crossing guards, and even school bus drivers themselves may have the power to wave traffic on, even when a red light is flashing . </P> <P> On divided highways, most American and Canadian jurisdictions do not require vehicular drivers to stop when on the opposite side of the road from a stopped school bus . Those that do require vehicles to stop are: </P> <Ul> <Li> West Virginia upon a non-controlled - access highway (§ 17C - 12 - 7) </Li> <Li> Arkansas in case a divider has less than 20 feet (6 m) in width (narrow divider). </Li> <Li> New York State </Li> <Li> American Samoa </Li> <Li> Guam </Li> <Li> British Columbia </Li> <Li> Nova Scotia </Li> <Li> Prince Edward Island </Li> <Li> Northwest Territories </Li> <Li> Nunavut </Li> </Ul> <Li> West Virginia upon a non-controlled - access highway (§ 17C - 12 - 7) </Li>

When do i have to stop for a school bus