About Closure signs C: who, what and which number is barred: which statement is WRONG?
C17 = length; C22 = closed to vehicles carrying certain dangerous goods, not a dimension.
The sign looks at the total mass or the sum of the axle loads — the actual, measured mass — not the permitted maximum mass on paper.
A closure never applies to cyclists; they may always continue regardless of which sign is present.
C6 = closed to motor vehicles WITH MORE THAN TWO WHEELS; this excludes a motorcycle (two wheels) from the ban, but an ordinary car falls under it.
Explanation
trap: assumption of an automatic exception. Cyclists are only exempt **if an under-sign with 'uitgezonderd' plus the cycle symbol explicitly says so**; without that under-sign the ban applies to them too