Heavy Equipment Operator Certification Exam Prep · Question
A loaded articulated dump truck is descending a snow-covered grade. To maintain control and prevent skidding, which braking technique is most appropriate and why?
Intermittent, light applications of the service brakes combined with engine braking prevent wheel lock-up and maintain traction on slippery surfaces, ensuring c
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Question: A loaded articulated dump truck is descending a snow-covered grade. To maintain control and prevent skidding, which braking technique is most appropriate and why?
Answer options:
- Applying the service brakes firmly and continuously for maximum stopping power. ✅ Intermittent, light applications of the service brakes along with engine braking.
- Relying solely on the exhaust brake for long, sustained periods.
- Disengaging the transmission and allowing gravity to control speed.
Correct answer: Intermittent, light applications of the service brakes along with engine braking.
Explanation: Intermittent, light applications of the service brakes combined with engine braking prevent wheel lock-up and maintain traction on slippery surfaces, ensuring controlled descent (as per OPSWA HEO guidelines).
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