When is it obligatory to hold a police authorization for transporting a long freight?

1. When the length of the freight exceeds 15 meters.
2. Holding an authorization of a police officer is not obligatory for this type of transport.
3. An authorization is only obligatory in the transportation of hazardous materials.
4. Correct answer: When the length of the vehicle plus the freight it carries exceeds 20 meters.

WhyA police authorization is needed when the vehicle with its freight is longer than 20 meters. That is the threshold for the permit, not the maximum length.