The sign "Vehicles with special cargo" (1052-31) is used in Germany to indicate that vehicles transporting special cargo are allowed to use the road. This sign is typically placed in areas where such vehicles are permitted or required to drive, despite any restrictions that may apply to other vehicles.

Special cargo can include oversized loads, hazardous materials, or other types of cargo that may not conform to standard vehicle dimensions or characteristics. The presence of this sign helps to inform drivers that these vehicles may be present in the area and that they should exercise caution.

When you encounter this sign, it is important to be aware of the specific rules and regulations that may apply to vehicles carrying special cargo, as they can affect road safety and traffic flow. Always be attentive to additional signage or signals that may provide further guidance on how to navigate around such vehicles.