On this road traffic sign, to what does the information “12 t” refer?

The "12 t" sign indicates a weight limit of 12 tons. According to German traffic laws, this refers to the maximum authorized mass of vehicles that are allowed to use that particular road. Exceeding this mass can lead to structural damage to the road or bridge.

In this context, it’s essential to understand that the maximum authorized mass includes both the vehicle and any load it may carry. Hence, when interpreting this sign, it's crucial to recognize that the correct answer relates specifically to the maximum authorized mass rather than the actual mass of the vehicle or its load. Knowing this helps drivers comply with local regulations and ensures road safety.