Correct answer
Mandatory carriageway for lorries, tractor units and vans regardless of mass.
It requires lorries, tractor units and vans, regardless of mass, to use the carriageway at whose entrance it is placed. It is mandatory, not a recommendation or an entry prohibition. A tonnage figure on the silhouette or a plate would restrict the obligation to vehicles or combinations whose MAM exceeds that figure. No such restriction appears in this image.
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Carriageway merely recommended for those vehicle classes.
Carriageway prohibited for those vehicle classes.
Mandatory carriageway for lorries, tractor units and vans regardless of mass.
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