Blowout on I-70 at Dusk
7:10 p.m. in late October, light rain and dusk. You are driving a 47-passenger motorcoach eastbound on I-70 near Zanesville at 65 mph with 48 people aboard. Without warning you hear a bang, the bus pulls right, and the steering wheel shudders; in the right mirror you see shreds of tread and a puff of smoke from the right rear inner dual. You steer onto the shoulder, which is about 8 feet wide, with a guardrail on the right and a shallow drop-off beyond it. Traffic is passing at 70 mph and not moving over. The engine is running normally, but you smell hot rubber. Two passengers are already standing and asking to get off. Your triangles are in the compartment by the door.
1. Do you evacuate? State the decision rule and apply it to these facts.
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Stay put for now, and prepare to leave. The rule is to evacuate only when staying is more dangerous than moving: fire, smoke that is not tire rubber, a fuel or hazmat leak, or the bus sitting in a live lane.
Here the bus is upright and fully off the travel lane, the engine runs normally, and the smoke is most likely from the failed tire. Opening the doors into 70 mph traffic beside a guardrail and drop-off puts 48 people on an 8-foot shoulder - likely worse than a belted seat.
Assign an able adult to watch the wheel well and rear for flame or a worsening smell. Keep everyone seated and belted. Start the calls. If you see flame, or the bus settles or slides, the judgment flips instantly: rear door, away from traffic. Decide now which door you would use and point it out.
2. A minute later the smell sharpens and you see flame at the right rear wheel well. What is the evacuation sequence?
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Now you evacuate, and direction is the whole point. Smoke plus a tire fire can reach the interior quickly.
- Use the rear emergency door, not the front door on the traffic side. Lead people away from the travel lane, behind the guardrail if it can be crossed safely, and upwind of the bus.
- Do not let anyone cross the interstate, and do not let anyone stand between the bus and the guardrail.
- Move the group at least 100 feet from the bus and count heads against your total. Send one adult to keep the group together.
- Call 911 with mile marker, direction, and the fact that 48 people are evacuating; have a second person call so the first call is not lost.
- Once people are clear, nobody goes back for bags.
3. Where do the warning devices go, and how do you divide the work while keeping passengers safe?
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On a divided highway, devices go 10, 100, and 200 feet behind the bus, within 10 minutes. Place them at the traffic-lane edge where an approaching driver will actually see them, starting with the closest so you are not walking far in traffic.
Practical order: four-way flashers already on; carry all three triangles in one trip; place the 10-foot device first, then 100, then 200; face traffic while walking and step off the shoulder to let vehicles pass. If an adult with a high-vis vest is available, they can place the far ones while you stay with the passengers - but never send someone into the lane if you can avoid it.
Then call dispatch with location, passenger count, and whether you need a relief bus. The tire does not get changed with people aboard.