The model: Closure signs C: who, what and which number is barred
C17 = length, C18 = width, C19 = height, C21 = mass (total mass or sum of the axle loads, including load) — all with a number on the sign. C22 breaks that pattern: no number, closed to certain dangerous goods (Book p.239-240). And C6 only closes motor vehicles WITH MORE THAN TWO WHEELS — so a motorcycle may still pass.
Questions on this section
All sections of this topic
- Challenge: Closure signs C: who, what and which number is barred
- Core: Closure signs C: who, what and which number is barred
- Why it matters: Closure signs C: who, what and which number is barred
- Active recall: Closure signs C: who, what and which number is barred
- Teach back: Closure signs C: who, what and which number is barred
- Memory hook: Closure signs C: who, what and which number is barred