If you go straight in a tractor with a trailer, what should you see in properly-adjusted external mirrors?

Explanation

Correct answer: The area behind the combination vehicle, on both sides, and the edge of the trailer.

Correctly adjusted external mirrors must provide the driver with the maximum field of vision behind the vehicle, which is crucial for observing the surroundings and other road users. The visible edge of the trailer serves as a necessary reference point, enabling the driver to correctly assess the width and position of the entire combination of vehicles. This adjustment minimises the so-called blind spot and is essential for safely performing manoeuvres, such as changing lanes or overtaking.

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