Hazmat decision support • U.S. highway

Hazmat Placard Decision Tool

Enter each material exactly as shown on the shipping papers. The tool evaluates common federal vehicle-placarding rules and explains which placards may be required.

Ingresa cada material exactamente como aparece en los documentos de envío. La herramienta evalúa las reglas federales comunes y explica cuáles rótulos pueden ser necesarios.

Do not use this tool as the final authority.Placarding can depend on the complete §172.101 entry, packing group, hazard zone, subsidiary hazards, packaging, quantity, mode, route, special provisions, and exceptions. Verify the shipping papers, current 49 CFR, and your employer’s hazmat procedures before moving the vehicle. For emergencies, follow the ERG and emergency instructions—not this calculator.

1. Load information

Información general de la carga

Air, vessel, rail, and transportation outside the United States are outside this tool.
Use the same letter for materials loaded at the same facility.

2. Materials on the vehicle

Copy the proper shipping description and hazard information from the shipping papers. Do not classify a product from memory or its trade name.

Placard guidance