Good visibility to the rear is very important for drivers of caravans, especially when overtaking. For this reason, additional exterior mirrors are mandatory if the caravan is wider than the towing vehicle. The law is clear:
"Motor vehicles must have mirrors designed to enable the driver of the vehicle to observe all significant traffic events to the rear and side - even when towing trailers."
Today, almost only additional exterior mirrors are offered that can be attached to the existing vehicle exterior mirrors. In some cases, the vehicle manufacturers themselves offer special additional exterior mirrors for their models.

Tip: Attach your wing mirrors to the car so that you can see the rear edges of the caravan on both the left and right side when driving straight ahead.
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