What must you remember when coupling up a trailer?

When coupling up a trailer, it's essential to follow the correct procedure to ensure safety and functionality on the road. According to German traffic regulations, the correct method involves two key steps.

First, you should always connect the service line (the yellow hose coupler) first. This line is critical for the braking system of the trailer, ensuring that it functions properly during driving.

Second, if the hose couplers for both the service line and the emergency line (red hose coupler) are designed to connect simultaneously, you should connect both lines at the same time. This minimizes the risk of forgetting one of the connections and ensures that both the service and emergency braking systems are engaged properly.

These steps are vital for maintaining control over the trailer and preventing accidents, thereby upholding safety regulations outlined in German traffic laws. Properly connecting these lines supports the integrity of the braking system, which is crucial, especially when traversing varying terrains or heavy traffic. Neglecting these steps can lead to malfunctioning brakes and severe hazards on the road.