You are transporting commercial goods with a truck. What is the purpose of the 35-hour further training course, which you must attend within 5 years?

The 35-hour further training (Berufskraftfahrer-Weiterbildung) is mandatory for professional truck drivers and is there to keep you fit and safe for the job over the long term. It is not about getting a new licence class.

Correct are answers 1 and 2: The course should increase awareness of health (for example fatigue, stress, back strain, ergonomics, and staying medically fit for duty) and it refreshes and updates your knowledge of the rules that matter in commercial road haulage (for example driving and rest times, load securing basics, documentation duties, and other professional regulations). The key idea is: as a professional driver you must regularly update safety-relevant knowledge and attitude, not “upgrade” your driving licence.

Answer 3 is wrong because additional driving licence classes require separate practical training and tests; the 35-hour course is only continuing education to maintain your professional qualification.