Assertion: school bus's light | /r/HasProperty | visible
Facets:
Source sentences:
text: When the flashing red lights or stop sign on the control arm of a school bus are visible, the driver of a vehicle approaching the school bus from any direction must stop before reaching the school bus and may not proceed until the school bus resumes motion, is signaled by the school bus driver, or the flashing red lights and the stop sign are no longer in use.