Final answer:
On a divided highway with a median, you should proceed as normal when a school bus on the opposite side has its stop lights on and arm extended. Always follow local laws and prioritize safety.
Step-by-step explanation:
When approaching a school bus in the opposite direction which has its stop lights on and the stop arm extended, on a highway that is divided by a median, the correct action to take is to proceed as normal. It is generally the rule that if there is a physical median separating the opposite directions of traffic, cars in the opposing lanes are not required to stop. However, it's essential to stay vigilant and drive safely, respecting the speed limit and being ready to react to unexpected situations, especially when near a school bus.
This is assuming that the divided highway does have a median of some sort. It is always important for drivers to follow specific state and local laws, as regulations can vary from place to place. The safety of children and the precise instructions of the road signs should always be a priority.