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8. What must be done with the engine when refueling a bus?
9. When must the bus driver wear a seat belt?
10. At a railroad crossing, a bus must stop within what distance of the tracks?
11. What must a bus driver do at a railroad crossing after stopping?
12. How far before a drawbridge must a bus stop?
13. What should a bus driver do when stopped at a drawbridge?
14. What is a brake-door interlock on a bus?
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