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172.505 and 172.516
Section 172.505 establishes the general placarding requirements for subsidiary hazards, and 172.516 establishes the visibility and display of placards.
In this scenario, a carrier asks where on a transport vehicle a subsidiary hazard placard must be placed in relation to the primary hazard class placard with which it is associated.
In this interpretation, PHMSA addresses the proximity of subsidiary placards in relation to primary placards.
In interpretation Ref. No. 07-0071, PHMSA advises that the subsidiary placard must be placed in relation to the primary hazard class placard.
172.505 and 172.516
Section 172.505 establishes the general placarding requirements for subsidiary hazards, and 172.516 establishes the visibility and display of placards.
In this scenario, a carrier asks where on a transport vehicle a subsidiary hazard placard must be placed in relation to the primary hazard class placard with which it is associated.
In this interpretation, PHMSA addresses the proximity of subsidiary placards in relation to primary placards.
In interpretation Ref. No. 07-0071, PHMSA advises that the subsidiary placard must be placed in relation to the primary hazard class placard.