Whether the railroad crossing is passive or active, when driving a school bus you must always _________.

Obstructed View of Tracks:
- Plan your route so it provides maximum sight distance at highway-rail grade crossings.
- Do not attempt to cross the tracks unless you can see far enough down the track to know for certain that no trains are approaching. Passive crossings are those that do not have any type of traffic control device. Be especially careful at "passive" crossings. Even if there are active railroad signals that indicate the tracks are clear, you must look and listen to be sure it is safe to proceed.