In a two-line braking system, what is the effect of a rupture in the emergency line to the trailer?

In a two-line braking system, understanding the function of the emergency line is crucial. When there is a rupture in the emergency line to the trailer, the correct effects are:

1. The trailer will brake automatically, which is a safety feature to prevent it from becoming detached and causing an accident.
2. The trailer air supply will be sealed off from the broken emergency line, ensuring that air pressure for brakes is maintained in the remaining system and preventing further issues.

These actions are important as they ensure the safety of the vehicle, trailer, and other road users by effectively managing braking capabilities following a failure. According to German traffic regulations, all components of the braking system must function correctly to maintain safety on the road. Therefore, recognizing all relevant points in such scenarios is essential for understanding vehicle safety mechanisms.