UK Highway Code Practice Test

A green filter arrow on a road lane means you may use the filter lane:

Only if you are travelling in the direction of the arrow. In any direction. Only when turning left. Only if the lane is clear.

Correct Answer:

Only if you are travelling in the direction of the arrow.

Explanation:

Green filter arrows identify a dedicated lane that is protected for vehicles moving in the direction the arrow points. The rule is simple: you may use that filter lane only if you’re intending to travel in the same direction as the arrow. This helps you merge or filter into the main flow without causing conflicts with traffic in other lanes. If you’re not turning or moving in that direction, you should stay in your current lane. The lane isn’t for any direction, nor is it automatically allowed just because the lane is clear; the direction of travel dictated by the arrow is the deciding factor.

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