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BDifficulty 1/5

Which motorway feature reduces collision risk between vehicles travelling in opposite directions?

Correct answer

Separate carriageways for each direction.

Separate carriageways reduce head-on conflicts associated with undivided two-way traffic. This does not eliminate crashes or make every speed safe. Rear-end collisions, departures from the road and other crashes remain possible; maintain attention, separation and appropriate speed. Monotony and high speed are not themselves safety benefits.

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  • Separate carriageways for each direction.

  • The higher permitted speed alone.

  • The journey’s monotony alone.

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