Correct answer
When I have changed lanes.
The left indicator must be switched off once the lane change has been completed. Before starting any manoeuvre, such as a lane change, the driver must signal their intention sufficiently in advance using the indicators. This enables other road users to understand the driver’s intention and prepare to adapt their behaviour accordingly. The correct process for a safe lane change is: Switch on the left indicator to indicate the intention to change to the left-hand lane. Keep the indicator on throughout the lane-change manoeuvre. Switch off the indicator once the vehicle has completely stabilised in the new lane.
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When I return to the right-hand lane.
After travelling 200 metres in the new lane.
When I have changed lanes.
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