When using a placard to identify a subsidiary hazard (secondary hazard), does it need to show the hazard class number?

No, it may be used without the hazard class number. Section 9.3.11: Placards used to identify the subsidiary hazard class... without the

When using a placard to identify a subsidiary hazard (secondary hazard), does it need to show the hazard class number?

ANSWER BREAKDOWN
  • A. Incorrect. "Yes, always" is not correct. Placards used to identify the subsidiary hazard class... without the hazard class number may be used as long as they stay within color specifications.
  • B. Correct. Placards used to identify the subsidiary hazard class... without the hazard class number may be used as long as they stay within color specifications.
  • C. Incorrect. "Only if it is a liquid" is not correct. Placards used to identify the subsidiary hazard class... without the hazard class number may be used as long as they stay within color specifications.
  • D. Incorrect. "Only if it is an explosive" is not correct. Placards used to identify the subsidiary hazard class... without the hazard class number may be used as long as they stay within color specifications.