Before taking a C truck under a bridge, into a depot or along a tree-lined road, what should you check about height?

1. The actual height of this vehicle and load against the signed or known clearance, using the plate and a load check
2. A standard European truck height, which is always low enough
3. Nothing, because C vehicles are banned from all low bridges automatically
4. Only the unladen height in the brochure, ignoring today's load