You want to pull a trailer. When do additional rear-view mirrors have be to attached to your motor vehicle?

In German traffic rules, additional rear-view mirrors must be attached to a motor vehicle towing a trailer whenever the driver cannot adequately see all relevant traffic situations behind and beside the vehicle with the standard mirrors alone. This ensures safety by eliminating blind spots created by the trailer. The key point is that the need for extra mirrors depends on the driver's ability to maintain a clear and complete view of the traffic, not on specific trailer dimensions or trailer types. Therefore, if your existing mirrors do not provide a sufficient field of vision, additional mirrors are required. This rule helps prevent accidents by ensuring good visibility in all driving situations involving trailers.