Practice question

What is 'Brake Compatibility' or Coupling Harmony (Abstimmung / Koppelkraftregelung) between a towing truck and a semitrailer/trailer?

Adjusting only the tractor brakes so they lock before any trailer braking begins
Setting the trailer brakes to respond later so the combination feels smoother when lightly loaded
Ensuring that the towing vehicle and the trailer brake proportionally to their respective masses, preventing the trailer from pushing (overrunning) or pulling excessively on the towing vehicle during deceleration
Using identical brake-chamber sizes on every axle regardless of axle load and vehicle design

Answer: C — Ensuring that the towing vehicle and the trailer brake proportionally to their respective masses, preventing the trailer from pushing (overrunning) or pulling excessively on the towing vehicle during deceleration

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