Examkin

Soru

Zorluk: OrtaTire Failure and Blowouts

While transporting cargo along an open highway, a commercial driver experiences a loud popping sound followed by severe steering shudder caused by a catastrophic tire blowout. In what sequential order should the driver carry out emergency recovery actions to safely bring the vehicle to a stop?

  1. 1Firmly hold the steering wheel with both hands to maintain straight-line tracking and counteract directional pull.
  2. 2Stay completely off the service brake pedal and ease off the accelerator to let the vehicle coast and shed speed.
  3. 3Steer smoothly toward the road shoulder and apply gentle, controlled braking once momentum has significantly slowed.
  4. 4Come to a complete stop off the roadway, set the parking brake, and activate the four-way hazard flashers.

Cevap

The driver must first firmly hold the steering wheel with both hands, stay off the service brake to let the vehicle decelerate naturally, then steer toward the shoulder with gentle braking once slowed, and finally secure the stopped vehicle off the roadway with parking brakes and hazard lights.
The correct sequence prioritizes directional stabilization through a firm steering grip first, followed by staying off the brake pedal so the vehicle coasts down safely, then executing a gradual move to the shoulder with gentle braking, and ultimately securing the stationary vehicle with flashers.

Adım Adım Çözüm

1
Maintain directional control by firmly gripping the steering wheel with both hands.
Prevents sudden lane departures or jackknife caused by the vehicle pulling heavily toward the blown tire.
Stabilizing the steering path is the immediate priority during rapid air loss.
2
Avoid depressing the service brake pedal and release the accelerator.
Allows rolling resistance and engine drag to gradually reduce road speed without destabilizing the tires.
Hard braking on a flat or shredded tire frequently causes wheel lockup, loss of steering control, or rollovers.
3
Guide the combination vehicle toward the road shoulder and apply light, progressive service braking.
Safely transitions the vehicle out of live traffic lanes at a controllable speed.
Braking is safe only after aerodynamic drag and coasting have reduced the vehicle to manageable speeds.
4
Bring the vehicle to a full stop on the shoulder, apply the parking brake, and turn on the four-way emergency flashers.
Secures the vehicle in a safe location away from active travel lanes.
Ensures the disabled commercial motor vehicle is stationary and visible to oncoming traffic.

Anahtar Kavram

Commercial Vehicle Emergency Response to Tire Blowouts
Tahmini Süre:1m 15s
Bu soruyu puanla

Konular

Tire Failure and Blowouts

Bu konudan daha fazla soru