What does this traffic sign indicate?

This traffic sign indicates a prohibition for vehicles that are wider than 2 meters including their load. It means vehicles exceeding this width are not allowed to pass beyond this sign.

The red circle with the number and arrows on the sides is a common German traffic sign used to restrict vehicle width. The measurement includes the total width of the vehicle plus any load or attachments.

This rule ensures safety on narrow roads or areas where wider vehicles might cause obstruction or danger. It is important to note this is not about keeping lateral distance from other vehicles or indicating the width of the roadway, but strictly a maximum vehicle width limit.