Which warning plate is correctly mounted?

The image illustrates a tractor that is displaying the appropriate warning plates. In Germany, vehicles like this, particularly those that are slower or operate on public roads, must have clear visibility indicators to alert other road users of their presence.

The relevant traffic regulations specify that warning signs must be installed at specific points to ensure they are visible from a distance, especially to vehicles traveling faster than the tractor. This is crucial for maintaining safety on the roads. Proper placement helps prevent accidents by allowing other drivers to gauge the speed and intentions of the slower-moving vehicle.

In this specific instance, the correct warning plates are mounted on the rear of the tractor, indicating that it is a slower vehicle with a designated maximum speed, which is essential information for other road users.