Yes, the vintrica Flow toll box can also be used with a trailer.
The vintrica Flow toll box must be mounted in the towing vehicle. The trailer does not require its own toll box and does not need to be registered.
The toll station automatically recognizes that a trailer is being towed and charges the correct toll category.
Please note that the combination must not exceed the maximum weight of 3.5t and the height restriction of 3m (Croatia: 1.90m).