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Difficulty: EasyStopping and Braking Procedures

When bringing a commercial motor vehicle equipped with a manual transmission to a normal stop, the clutch pedal should be depressed only after engine revolutions drop close to idle speed.

Answer: Answer

Answer

True. In a manual transmission commercial motor vehicle, the driver should wait until engine speed drops near idle before depressing the clutch pedal to utilize engine braking.
The statement is true because maintaining clutch engagement until engine speed reaches near-idle preserves engine braking resistance, enhancing vehicle control and reducing brake wear.

Step-by-Step Solution

1
Apply smooth, steady pressure to the service brake pedal while keeping the clutch engaged in gear.
The vehicle decelerates with assistance from engine compression braking.
Engine braking provides natural resistance that reduces wear and thermal stress on the foundation brakes.
2
Depress the clutch pedal as the engine speed approaches idle (approximately 1,000 RPM) just before coming to a complete standstill.
The engine is disconnected from the drivetrain without stalling.
This prevents the engine from stalling while maximizing the duration of engine braking assistance during deceleration.

Key Concept

Clutch depression timing during normal braking procedures in manual transmission commercial vehicles.
Estimated Time:45s
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Topics

Stopping and Braking Procedures

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