In particular, permission may only be granted
- the traffic is not possible - at least for the major part of the route - by rail or water, or if unreasonable additional costs would be incurred by traffic by rail or water, and if roads are available for the entire route, the structural condition of which is not impaired by the traffic and for the protection of which no special measures are required, or if at least the subsequent restoration of the roads or the implementation of those measures would not be too time-consuming or too extensive, particularly for traffic reasons.
- for the transport of an indivisible load; a load is indivisible if its disassembly is impossible for technical reasons or would cause unreasonable costs; the accessories of a crane and the weights of a calibration vehicle are also considered indivisible;
- for the transport of a load consisting of more than one part, if the parts cannot be transported as individual pieces for strength reasons and they are indivisible;
- accessories to indivisible loads; they may not exceed 10% of the total mass of the load and must be listed in the accompanying document with an exact designation;
- for the transport of several individual indivisible parts, each of which, because of its length, width or height, requires the use of a vehicle with a special permit according to § 70 StVZO and is indivisible, but in compliance with the total mass and axle loads permitted according to § 34 StVZO;
If the applicant or the person carrying out the transport has intentionally or through gross negligence previously carried out a transport requiring a permit without the required permit or has violated the conditions and requirements of a permit, he or she shall not be granted another permit for an appropriate period of time.
If the consignor and consignee have sidings, the issuance of a permit shall be permitted only if it is demonstrated that rail transportation is not possible or is unreasonable. The proof may only be waived in urgent cases.
A permit in accordance with Section 29 (3) of the StVO is not required if vehicles and vehicle combinations exceed the dimensions specified in the StVO only because of their load. In these cases, an exemption permit must be applied for in accordance with Section 46 ( 1 ) No. 5 of the StVO. The same authority that would be responsible for the permit in accordance with Section 29 (3) of the StVO is responsible for issuing it.
The authorities responsible for issuing the permit are the lower road traffic authorities. In Bavaria, these are the district offices and independent cities. In addition, the large district cities also perform this task. The responsible permit authority is the authority in whose district the transport requiring the permit begins, or the permit authority in whose district the applicant has his place of residence, his registered office or a branch office.
Permits for special transports can only be issued upon application. The application must specify the intended route and, in particular, the following actual technical data:
- Length, width, height,
- actual total mass, actual axle loads,
- number of axles, axle spacing, number of wheels per axle,
- type and designation of the load and information on the indivisibility of the load, dimensions and weight of the load,
- maximum design speed of the transport,
- registration plates and vehicle identification numbers of towing vehicles and trailers as well as individual vehicles.
Applications can be submitted either in writing to the licensing authorities (application form), or online via the browser-based Internet platform provided by the eGovernment project VEMAGS® "Procedural Management for Large and Heavy Transport" (see under "Online Procedures").
The responsible authority conducts a hearing procedure based on the application. As part of this process, it involves all the authorities affected by the transport route within Germany and compiles their comments on the application (e.g., rejection, approval subject to conditions) into a permit notice.