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BDifficulty 2/5

When dangerous-goods transport is subject to ADR rectangular-panel marking requirements, what colour are those panels?

Correct answer

Orange

Retroreflective orange. The prescribed panels are displayed and used according to the rules applicable to the transport. They are not all numbered: depending on the transport, they may be blank or carry the required hazard and substance identification numbers. Some transport operations are exempt from panel marking; not every vehicle carrying any amount of dangerous goods must display panels.

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