You have to drive onto a muddy building site. Why should you switch on your diff-lock?

Possible Answers:
a. To make your steering lighter
b. To improve your fuel consumption
c. To increase your engine power
d. To make the wheels less likely to spin

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When should you use a crawler lane?

Possible Answers:
a. When letting faster traffic overtake you
b. When turning right from a major road
c. When parking to have a rest
d. When slowing down for a motorway exit

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