You're driving on a road that has double white lines along the centre of the road. The line nearest you is continuous. When may you cross this line to overtake?

Possible Answers:

a. When you're passing traffic that's queuing at a junction with a major road

b. When you can see there are no obstructions on the right-hand side of the road

c. When you're passing a road maintenance vehicle that's travelling at less than 10 mph

d. When you're passing a car that's slowing down to turn left into a minor road

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