Answer:
A median other physical barrier
Explanation:
When there is a stopped school bus that has the alternating red flashing signal lights on it is required for the oncoming vehicle drivers on the same lane of the highway where the school bus is parks to stop and the driver of
all vehicles are to wait for the school is once again in motion before they can resume their journey
However for vehicles moving in the opposite direction on the other side of the road separated by a physical barrier are not required to stop.
