Correct answer
The vehicle that was already travelling in the lane.
When changing lanes, the vehicle that is already travelling in the lane has priority over the one wishing to move into it. This rule is based on the principle of giving priority to the vehicle that is already established on the road. When changing lanes, it is essential to follow a series of steps to ensure road safety. First, the driver must observe carefully to make sure the manoeuvre can be carried out without obstructing or endangering other road users. Then, they must signal their intention to change lanes using the indicator or the arm in the corresponding position, making sure to stop signalling once the vehicle is in the correct position. While carrying out the manoeuvre, it is essential to bear in mind that vehicles travelling in the lane you wish to move into have priority, and you must therefore give way to them.
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The vehicle that was already travelling in the lane.
The vehicle changing lanes, in any case.
The vehicle changing lanes, if travelling at high speed.
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