Under what condition is the use of the general 'DANGEROUS' placard not sufficient, requiring specific class placards instead?

Correct answer to question 125 (Hazardous Materials): If 1,000 kilograms (2,205 pounds) or more of one specific hazard class is loaded at a single location, that class's specific placard is required

Why

If a single hazard class reaches 1,000 kilograms (2,205 pounds) or more loaded at one location, that specific class's placard must be used instead of relying solely on the general DANGEROUS placard, ensuring responders know a significant amount of that hazard is present.