What are direction indicators used for?

En español: ¿Para qué se utilizan los indicadores de dirección?

A To warn that the vehicle has broken down
B To signal the intention to turn or change lane Correct answer
C To indicate that you are braking
D To light the rear number plate

Why this is the correct answer

Direction indicators are used to warn other road users of the intention to turn or change lane, communicating the manoeuvre in advance.

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