Smoke in the Engine Compartment with Students Aboard
You are stopped at a curb loading 18 elementary students, with 9 already seated and 9 still on the sidewalk. The engine is idling. You notice a faint burning smell, then see light gray smoke coming from the right side of the engine compartment near the cowl. The outside temperature is 96 degrees, the door is open, and the last student in line is a kindergartner holding a large cardboard project. Your fire extinguisher is mounted behind the driver's seat; you have not used it since training two years ago. A parent is parked behind you.
1. Decide the order of operations: students first or extinguisher first? Justify.
Read the worked answer
Students first. Smoke near the cowl with the engine idling is a potential engine fire, and the passenger compartment fills fast. Life safety precedes property protection, and a school bus evacuation is the priority whenever smoke or fire is suspected. The extinguisher is for a small, contained fire only after occupants are moving to safety, and only if you can keep an exit at your back.
So: shut down the engine if you can do so immediately, set the parking brake, open the service door, and direct the 9 seated students out the door to a safe assembly point away from the bus and upwind. Tell the 9 on the sidewalk to back away from the bus and stay with the parent or another adult if one is present. Then account for all 18 by name or count using your seating knowledge.
Only after evacuation, and only if the smoke source is small and accessible, would you attempt the extinguisher. If the smoke is growing or you cannot see the source, stay out and call 911.
2. The kindergartner is still on the sidewalk clutching the project and moving slowly. How do you handle the child and the evacuation route?
Read the worked answer
Do not let a possession delay evacuation. Speak directly and simply: leave the project, take my hand, we are walking away from the bus now. If the child freezes, pick the child up or guide firmly by the hand; a kindergartner's safety outweighs the project, and the parent can retrieve it later.
Choose an assembly point at least 100 feet from the bus, upwind if the wind direction is clear, and away from traffic and the parked parent's vehicle. Keep the group together and count again. Assign an older student to watch the youngest if your policy allows, but keep the count yours.
Then call 911, notify dispatch, and notify the school. Do not reboard the bus to retrieve belongings. If the smoke has stopped and the fire department clears the bus, you may reload only after their direction and a fresh walk-through.