ifahrer logo

iFahrer - Führerschein

Get ready for your license test with AI assistance!

What is the effect on a truck-trailer combination when the parking brake in the towing vehicle is engaged (not in the test position)?

check

The towing vehicle will be mechanically braked

check

At this point, the trailer will usually only be braked with compressed air through the service brake system

check

The trailer will be mechanically braked

Here is Our AI Assistant's Explanation

ifahrer logo

The selected combination is correct because when the parking brake in the towing vehicle of a truck-trailer combination is engaged, it ensures that the towing vehicle is mechanically braked. This is crucial for safety when the vehicle is stationary, preventing any unintended rolling.

Simultaneously, the trailer is typically braked through the service brake system using compressed air. This design is mandated by German traffic regulations, which require that trailers can be safely secured and operated, especially in terms of braking and stability.

Understanding this combination is important, as it emphasizes the need for proper braking mechanisms in different components of a truck-trailer setup, ensuring overall safety on the road.

Learn more by downloading app

ifahrer ios app ifahrer android app
Browse categories
Danger/hazard awareness What to do as a road user Right-of-way / Priority Traffic signs Environmental protection Technical aspects Fitness and qualification of motor-vehicle operato Regulations on the operation of vehicles
ifahrer app

iFahrer - Führerschein

Meistere das Fahren mit KI – Bereiten, Üben, Bestehen!

iFahrer - Führerschein

Meistere das Fahren mit KI – Bereiten, Üben, Bestehen!

ifahrer app