Who issues category I authorizations for passage of non-standard vehicles?

In the photo there is a low-loader combination for carrying machinery - it shows an abnormal vehicle in general, because the category I permit itself concerns other vehicles. According to the exam answer key, a category I permit for the passage of an abnormal vehicle is issued by the road authority responsible for the road on which the vehicle is to travel - answer A.

This was the rule until March 2021, and this is the answer the exam key expects. After the amendment, the Road Traffic Act states that a category I permit is issued for the passage of an abnormal slow-moving vehicle, agricultural tractor or combination with a special trailer, and it is issued by the starost (head of the district authority) competent for the applicant's registered office or for the place where the passage begins, for a period of 12 months. Answers B and C remain wrong in any case: the employer has no powers in this matter, and the Police only check the passage and can stop it. The driver must carry the permit and present it to authorised persons, and must also follow the conditions of passage set out in the permit; a route is set only in a category V permit.

Legal basis: Art. 64b para. 1, 3 and 4 and Art. 64 para. 1 and 4 of the Road Traffic Act (Prawo o ruchu drogowym)