A commercial motorcoach traveling at expressway speed experiences an abrupt front steer-tire blowout, causing severe directional pull toward the road edge. In what chronological sequence should the operator execute these actions to safely manage the emergency from the initial failure to post-stop inspection?
- 1Counteract violent steering pull by maintaining a firm, two-handed grip on the steering wheel to keep the vehicle tracking straight.
- 2Stay completely off the foot brake pedal and ease off the accelerator to let rolling resistance naturally reduce vehicle speed.
- 3Activate the turn signal and smoothly guide the vehicle toward the emergency shoulder once forward momentum has substantially decreased.
- 4Apply light, progressive service braking once rolling at a very low crawl to bring the vehicle to a full stop off the roadway.
- 5Set the parking brakes, activate four-way flashers, place emergency warning devices, and physically inspect the failed tire assembly.
Answer
1. Counteract violent steering pull with a firm grip; 2. Stay off the foot brake and ease off the accelerator to coast down; 3. Signal and guide the vehicle to the shoulder once speed is reduced; 4. Apply gentle braking at very low speed to stop; 5. Set parking brakes, activate flashers, place warning devices, and inspect the tire.
During an emergency steer-tire blowout, maintaining directional control with a firm grip is the critical first priority. The driver must resist the urge to brake immediately, allowing the vehicle to coast down naturally because braking amplifies lateral pull and can induce wheel lockup. Once speed has reduced safely, the driver signals and maneuvers onto the shoulder, applies gentle braking at a crawl to stop, and finally secures the vehicle with parking brakes and warning devices to inspect the tire.
Step-by-Step Solution
Key Concept
Chronological Emergency Procedure for Commercial Vehicle Steer-Tire Blowout
Estimated Time:1m 30s