A considerable amount of longitudinal play becomes apparent in the towing device of the trailer. What effect can this have?

The answer you selected is correct. A considerable amount of longitudinal play in the towing device can indeed lead to both potential damage to the cross beam of the towing vehicle and the risk of the trailer shearing off.

The first point, regarding damage to the cross beam, is important because excessive play can cause stress and strain on the towing components, leading to structural failure.

The second point emphasizes the risk of a trailer shearing off. This can create a dangerous situation for both the vehicles involved and other road users, as it could result in the trailer becoming unhitched during travel.

In German traffic regulations, secure towing and hitching practices are outlined to ensure safety on the roads. Ensuring that the towing mechanism is in good condition and free of excessive play is therefore essential for safe driving. Recognizing both aspects of the problem is crucial for comprehensive understanding and adherence to these safety standards.