Do you wish to carry out technical modifications to your vehicle or to a trailer? The operating permit can lapse as a result. You must provide proof that the technical modifications correspond to the regulations. The licensing authority can then issue you with a new operating permit for the vehicle.
Tip: Before carrying out an installation or modification, please contact an officially approved motor vehicle expert or an inspector from a technical monitoring organisation to see whether such changes will affect the vehicle's type-approval or whether it is possible for such changes to be approved in the first place, and whether the necessary approval can be obtained for a new type-approval.
Certain technical modifications must be inspected by the testing authority or an improved inspection organisation (TÜV, DEKRA, GTÜ, KÜS, GTS, FSP). You must then provide notification of these modifications to the licensing authority as quickly as possible. This includes:
- changes to the vehicle category or the vehicle type or type of bodywork
- changing the engine capacity, power output, type of fuel or source of energy
- increasing the top speed depending on the type-approval
- reducing the top speed depending on the type-approval if this has implications for the driver's licence or if it is relevant for the registration
- making changes to the permissible axle loads, the overall weight, the drawbar- or trailer load
- increasing the vehicle's dimensions- except for cars or motorcycles
- changing the seating or standing capacity on coaches
- any changes to the emissions or noise values where these changes have implications for motor vehicle tax or traffic bans
Note: Please clarify in advance whether you motor insurance covers the journey to the inspection organisation or testing authority.