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Question

Difficulty: MediumAdjusting Margins in Ice and Snow

When moving off on a road surface covered in packed snow or ice, selecting second gear rather than first gear helps to reduce wheel spin and establish traction.

Answer: Answer

Answer

True, because moving off in a higher gear such as second gear reduces torque at the driven wheels, helping to prevent wheel spin and maintain traction on slippery surfaces.
On snow and ice, friction between tyres and the road surface is severely limited. Moving off in second gear reduces torque at the drive wheels, enabling the vehicle to pull away smoothly without losing grip.

Step-by-Step Solution

1
Identify the primary vehicle control hazard when moving off on ice and snow
The road surface provides very low grip, meaning normal torque levels from the engine will cause the driven wheels to spin without moving the car forward.
Packed snow and ice dramatically reduce the coefficient of friction between the tyres and the road.
2
Evaluate the mechanical effect of gear selection on wheel torque
First gear produces maximum wheel torque, which promotes wheel spin, whereas second gear lowers wheel torque.
Lower wheel torque allows smoother delivery of power to the tyres, preserving tyre adhesion.
3
Determine if the statement aligns with official DVSA winter driving guidance
The statement is accurate and reflects standard winter driving practice.
Selecting second gear and easing gently off the clutch is the recommended method to move off safely on snow and ice.

Key Concept

Adjusting gear selection and control inputs to maintain traction and safety margins on ice and snow
Estimated Time:45s
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Topics

Adjusting Margins in Ice and Snow

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