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Difficulty: MediumSignals by Other Road Users

On a motorway, a driver in moving traffic is legally permitted to briefly display hazard warning lights to alert following traffic to a sudden queue or obstruction ahead.

Answer: Answer

Answer

True — The statement is correct under UK Highway Code Rule 116.
The statement is true because Highway Code Rule 116 allows drivers on motorways and unrestricted dual carriageways to briefly use hazard warning lights while moving to warn traffic behind of an upcoming queue or severe deceleration ahead.

Step-by-Step Solution

1
Identify the signal and the operational environment described in the statement.
The scenario describes hazard warning lights activated by a moving vehicle on a motorway.
Regulatory rules for illuminated signals differ depending on whether the vehicle is moving or stationary, and the class of road being used.
2
Evaluate the relevant Highway Code regulation governing hazard warning lights.
Highway Code Rule 116 strictly prohibits using hazard warning lights while moving, with one specific exception: driving on a motorway or unrestricted dual carriageway to briefly warn traffic behind of a hazard or queue ahead.
This exception allows high-speed following traffic sufficient time to react and decelerate safely to prevent multi-vehicle collisions.

Key Concept

Highway Code Rule 116 — Permissible use of hazard warning lights by moving vehicles on high-speed roads
Estimated Time:45s
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Signals by Other Road Users

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