Engine Smoke and a Wheelchair Student
At 8:05 a.m. you are driving a 2016 school bus with 18 students, including one student in a wheelchair, on the shoulder of a two-lane highway. Smoke begins coming from the dashboard and engine compartment, and you smell burning insulation. You stop, set the parking brake, and shut off the engine. The front door is clear but smoke is drifting toward it; the wind is from the right side of the bus. The rear emergency door opens freely. The wheelchair student is seated in the middle of the bus and uses a powered chair; the lift is at the side door and may still have power. The students are panicking, and one is trying to open a window. The nearest house is 300 yards away; 911 has been called by a passing driver.
1. Which exit do you use and in what order should students leave?
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I would assess the smoke path before giving directions. The smoke is coming from the front and drifting toward the front door, so the front door is becoming less usable. The rear emergency door opens freely and is away from the engine smoke. I would direct the ambulatory students to the rear door in a controlled but urgent order, starting with those nearest the rear, and send them upwind and away from the bus to an assembly point at least 100 feet away. I would not let students take belongings. Once the ambulatory students are moving, I would deal with the wheelchair student, because the lift may take time and the smoke could worsen.
2. How do you evacuate the wheelchair student if the lift is available but the side door area has smoke?
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I would not use the lift blindly. First I would check whether the side door area is clear enough and whether the lift still has power. If smoke is reaching that area, using the lift could expose the student to toxic smoke for a long period. If the lift path is clear, I would deploy it and evacuate the student, then move the chair upwind. If the lift is unsafe or unpowered, I would call for help and use the safest available method, such as moving the student to a manual chair or assisting a transfer only if trained and physically able. I would not delay the ambulatory evacuation while solving the wheelchair problem alone.
3. How do you account for students and secure the scene after evacuation?
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I would take a mental or written count before and after evacuation, using seat assignments if possible, and confirm the count at the assembly point upwind of the bus. I would keep the students together and away from traffic, and I would not let anyone re-board for belongings. I would send a responsible student or staff member to meet emergency responders if it is safe, and I would report the exact location, number of students, and wheelchair student's status. I would also note the smoke source and whether the bus battery was disconnected if I could do so safely. The scene is not secure until all students are accounted for and emergency personnel take over.