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Difficulty: MediumTraffic Lights and Signals

You are driving on a multi-lane road where traffic flow is managed by overhead gantry signals. The signal directly above your lane displays a steady diagonal amber arrow pointing downwards to the left. What action should you take?

  1. A
    Flash your headlights to claim priority and remain in your current lane
  2. Move safely into the lane to your left as soon as it is clear to do soAnswer
  3. C
    Maintain your lane position and focus solely on the vehicle directly ahead
  4. D
    Come to an immediate stop in your lane assuming an emergency system warning

Answer

Move safely into the lane to your left as soon as it is clear to do so
According to the UK Highway Code (Rule 177 on lane control signals), an illuminated diagonal arrow pointing downwards indicates that your lane is closed ahead or traffic is being directed away from that lane. You must change lanes in the direction shown by the arrow as soon as it is safe to do so.

Step-by-Step Solution

1
Identify the type and meaning of the overhead lane control signal
Recognise that a downward diagonal amber arrow indicates that the current lane is closing ahead or obstructed.
Overhead lane control signals give early warning of mandatory closures and lane direction changes.
2
Determine the required driving manoeuvre under the UK Highway Code
Prepare to change lanes in the direction indicated by the arrow (to the left).
Drivers must move out of the indicated lane before it terminates or displays a red cross.
3
Execute the manoeuvre safely using standard observation routines
Check mirrors, signal if necessary, and merge smoothly into the adjacent left lane when a safe gap appears.
Lane changes must always be completed safely without causing other vehicles to brake or swerve.

Key Concept

Overhead gantry lane control signals and mandatory lane clearance
Estimated Time:45s
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Topics

Traffic Lights and Signals

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