Control & OperationQuestion 76 of 120
You are stopped on an upgrade in a manual-transmission truck and need to start moving without rolling back. What is the correct technique?
a.Partially engage the clutch until you feel the vehicle try to move, then release the parking brake while adding throttle
b.Release the parking brake first, then find the friction point
c.Rev the engine to maximum and drop the clutch
d.Start in the highest gear available
Explanation
Holding the vehicle with the parking brake until the clutch takes hold prevents rollback into whatever is behind you. Releasing the brake first causes rollback, dumping the clutch at high rpm shocks the driveline, and starting in a high gear stalls the engine.
Practice all 120 questions free — no signup required.
Related questions on this topic
- After uncoupling, you notice the landing gear crank handle is left extended. Why must it be secured?
- You are parking on a slight grade and will leave the vehicle. What should you do?
- You are on a slick, snow-covered road descending a grade. What should you do with the engine brake or retarder?
- How should you hold the steering wheel when driving a heavy vehicle?
- What is the correct way to make a normal stop in a vehicle with air brakes?
- Why should you avoid coasting in neutral while driving a commercial vehicle?
Last reviewed: · editorial process
PrepPass Editorial Team · Verified against Commercial Driver's License (CDL) General Knowledge Test · How we review