How does the IATA DGR differ from the DOT HMR regarding scope?

How does the IATA DGR differ from the DOT HMR regarding scope?

• A. IATA DGR governs ground transportation; HMR governs air transportation.
• B. Both govern only international shipments.
• C. IATA DGR governs air transportation; HMR governs ground transportation.
• D. IATA DGR is about packaging colors; HMR is about weights.

Answer: (C)

Scope difference is all about which transport mode each regulation covers. The IATA Dangerous Goods Regulations are the standard for dangerous goods shipped by air, guiding how items are classified, packaged, labeled, documented, and handled on flights and at airports. The DOT Hazardous Materials Regulations (HMR) govern hazardous materials moved by ground within the United States—by highway, rail, vessel, and related modes—covering packaging, labeling, shipping papers, training, and emergency information for those ground movements. Because they address different parts of the transport chain, the best answer is that the IATA DGR governs air transportation and the HMR governs ground transportation. The other statements don’t fit because they misstate which mode each regulation covers or introduce irrelevant details like packaging colors or weights.

Scope difference is all about which transport mode each regulation covers. The IATA Dangerous Goods Regulations are the standard for dangerous goods shipped by air, guiding how items are classified, packaged, labeled, documented, and handled on flights and at airports. The DOT Hazardous Materials Regulations (HMR) govern hazardous materials moved by ground within the United States—by highway, rail, vessel, and related modes—covering packaging, labeling, shipping papers, training, and emergency information for those ground movements. Because they address different parts of the transport chain, the best answer is that the IATA DGR governs air transportation and the HMR governs ground transportation. The other statements don’t fit because they misstate which mode each regulation covers or introduce irrelevant details like packaging colors or weights.