Assertion: school bus's stop arm | /r/CapableOf | help prevent driver
Facets:
value: from passing a stopped school bus
type: TRANSITIVE-OBJECT
Source sentences:
text: To supplement the additional warning lights and to help prevent drivers from passing a stopped school bus, a stop arm was added to nearly all school buses; connected to the wiring of the warning lights, the deployable stop arm extended during a bus stop with its own set of red flashing lights.