What may be the maximum length of a combination vehicle consisting of a bus and a trailer?
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Correct answer
B. 18.75 m.
Explanation
In the photo there is a medium-sized white touring coach. A vehicle combination consisting of a bus and a trailer may be at most 18.75 m long - answer B.
The Road Traffic Act states that the length of a combination of 2 vehicles must not exceed 18.75 m, and the length of a combination of 3 vehicles must not exceed 22 m. A bus with a trailer is a combination of two vehicles, so the 18.75 m limit applies to it. The value 22 m (answer A) applies to a combination of three vehicles, and 16.5 m (answer C) to a combination of a motor vehicle and a semi-trailer. A longer combination is an abnormal vehicle, and its passage requires a permit. You may attach a trailer to a bus, for example a luggage trailer, and a category D driving licence entitles you to pull a light trailer; a heavier one requires category D+E.
Legal basis: Art. 62 para. 4a and 4b of the Road Traffic Act (Prawo o ruchu drogowym)