Near Alkmaar you approach, in your truck, a road with sign C21 showing 15 t. Your registration certificate states a permitted maximum mass of 18 t. On the weighbridge today your loaded truck weighed 13 t, of which 9 t on the rear axle. Which weight do you compare with the 15 t on the sign?
- The 18 t stated as permitted maximum mass on your registration certificate
- ✓ The 13 t the weighbridge showed today for the whole truck
- The 9 t the weighbridge showed today on the most heavily loaded axle
Correct answer: The 13 t the weighbridge showed today for the whole truck
Explanation
False — you read C21 as a sign for the mass per axle. A per-axle limit belongs to sign C20; sign C21 is about the total actual mass, the sum of all axle loads.
Why learners get this wrong
- Wrong: you look at the paper instead of the real weight. Sign C21 is about the actual total mass of the vehicle or combination, load included; the permitted maximum mass on the registration certificate does not count here.
- Wrong: you read C21 as a sign for the mass per axle. A per-axle limit belongs to sign C20; sign C21 is about the total actual mass, the sum of all axle loads.
Topic: Closure signs C: who, what and which number is barred
Read the rule: Core: Closure signs C: who, what and which number is barred
Sections
- Challenge: Closure signs C: who, what and which number is barred
- The model: 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