A new online calculator from vanlifemag.de checks whether a car and caravan combination is legal on German roads. The tool compares data from the registration documents of both vehicles: braked towing capacity, noseweight, gross train weight and the conditions for travelling at 100 km/h. It also determines the required driving licence class. The calculation is based on the German Road Traffic Licensing Regulations (StVZO), the 9th Exemption Ordinance to the Road Traffic Act (StVO) and the Driving Licence Ordinance as of 14 November 2026. The 100 km/h permit applies only in Germany.