What do these traffic signs indicate?

The traffic sign shows a prohibition of overtaking, indicated by the red circle with two cars, one in black and one in white. This sign means that overtaking is not allowed for a distance of 3 kilometers, as stated by the supplementary sign below it.

In Germany, this combination of signs informs drivers that they cannot overtake other vehicles for the specified distance ahead. Overtaking restrictions are usually in place for safety reasons, often in areas with limited visibility or higher accident rates. Understanding these signs helps maintain safety for all road users.