Which warning plate is correctly mounted?

Your answer is correct because the warning plate on the right side (number 1) is mounted properly according to German traffic regulations.

The rule states that when vehicles have wide tires or protruding parts that extend beyond the vehicle’s standard width, warning plates with red and white diagonal stripes must be mounted to clearly mark these extensions. These warning plates must be positioned at the extreme outer edges of the vehicle so they are clearly visible to other road users, helping to prevent accidents.

In the image, the warning plates on the right (option 1) are correctly placed at the outer edge of the wide tires, making the tractor's width visible and compliant with the rule.

The left side (option 2) is incorrect because the warning plate is mounted too far inward, not at the outer edge. This makes it less visible and does not accurately indicate the vehicle’s maximum width.

Understanding this rule helps you recognize when and how warning plates should be mounted for oversized vehicle parts and ensure you spot properly marked vehicles on the road.