Trailers and coupling systems
Types of trailer and coupling devices (fifth wheel, pin coupling, ball coupling), compressed-air and electrical connections, and safe coupling and uncoupling. Also the terms nose load, fifth-wheel load and towable trailer load, and the rules on towing trailers.
- 40 questions in this topic
- Topic 10 of 18 in the course: Truck & Bus – supplementary theory (C, C1, D, D1)
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From the key facts
- Coupling devices = trailer couplings on towing vehicles, towing devices on trailers and fifth wheels; secured against unintentional opening; marked with nose load and D-value or towable trailer load (VTS Art. 91).
- Check before driving off: reliably coupled, brakes and lighting working, no contact between the vehicles on bends (VRV Art. 70 para. 1).
All key facts, the questions with explanations and the exam simulation are part of the course.
Legal references for this topic
The questions in this topic are based on these provisions:
- VTS Art. 6, 7, 8, 20, 21, 91, 127, 182, 184, 189
- VRV Art. 5, 22, 32, 65, 67, 68, 70, 72
- VZV Art. 3; Annex 11