While navigating a steep downhill corridor, a heavy commercial vehicle suffers total service brake loss from extreme brake fade. The driver has already downshifted to a lower gear, but the vehicle continues to gain speed toward an upcoming curve. If a designated runaway truck escape ramp appears along the roadway, which action should the driver take?
- ABypass the escape ramp and activate maximum driveline retarder force on the loose shoulder gravel.
- Steer the vehicle directly into the escape ramp to bring the runaway vehicle to a controlled stop.Answer
- CDrive past the escape ramp and repeatedly pump the foot pedal to reset overheated pushrod stroke travel.
- DContinue past the ramp to extend perception-reaction distance until reaching flat terrain at the base.
Answer
Steer the vehicle directly into the escape ramp to bring the runaway vehicle to a controlled stop.
Entering an escape ramp immediately upon recognizing total service brake loss provides a dedicated, engineered runaway catchment that safely decelerates the vehicle without risking a high-speed rollover or collision.
Step-by-Step Solution
Key Concept
Runaway Truck Escape Ramp Utilization During Total Brake Failure
Estimated Time:1m 0s