You are operating a fully loaded commercial combination vehicle at highway speeds when you experience a sudden, explosive blowout on the right front steer tire. The vehicle immediately pulls violently to the right. Arrange the following emergency response actions in the exact chronological order required by commercial driving safety standards to safely regain control and stop the vehicle.
- 1Establish a rigid, two-handed grip on the steering wheel to counteract the violent directional pull.
- 2Suppress the instinct to slow down and keep your foot entirely off the service brake pedal.
- 3Allow the vehicle's natural drag and engine braking to gradually coast the combination down to a manageable speed.
- 4Lightly engage the service brakes only after the vehicle has slowed down sufficiently.
- 5Maneuver the vehicle completely off the traveled portion of the highway onto a safe shoulder.
Answer
The correct sequence is to first firmly grip the steering wheel, intentionally stay off the brakes, allow the vehicle to coast to a slower speed, apply the brakes gently once stabilized, and finally pull completely off the roadway.
In the event of a steer-tire blowout, the sudden drag on the blown tire will violently pull the commercial vehicle to one side. The driver must first secure a rigid, two-handed grip on the steering wheel to fight this pull. It is absolutely critical to stay off the brakes during the initial phase of the failure; applying brakes will dramatically increase the drag on the blown tire side, causing an immediate, uncontrollable skid or rollover. The driver must simply hold the wheel straight and allow the vehicle to coast down to a manageable speed (usually below 20 mph) before gently applying the brakes and pulling off the active roadway.
Step-by-Step Solution
Key Concept
Tire Failure and Blowouts