# dangerous goods labeling

*Last updated: 2026-06-16*

> Dangerous goods labeling is governed by mode-specific international regulations, not general shipping rules: ADR applies to road transport, RID to rail, the IMDG Code to sea freight, and IATA DGR to air cargo.

Dangerous goods labeling is governed by mode-specific international regulations, not general shipping rules: ADR applies to road transport, RID to rail, the IMDG Code to sea freight, and IATA DGR to air cargo. Required markings include diamond-shaped hazard labels bearing the class symbol, the UN identification number, the proper shipping name, and – on packages – emergency contact information in many cases. Shippers, warehouse operators, and carriers are all responsible for ensuring these markings are correctly applied and remain legible throughout transit. Non-compliance can result in cargo rejection at the terminal, regulatory fines, or civil liability for incident costs. The exact requirements vary by hazard class – for example, Class 3 flammable liquids or Class 6.1 toxic substances – and by the specific transport route.

**Source:** [https://unece.org/transport/adr](https://unece.org/transport/adr)

## Quick Facts

| Property | Value |
|---|---|
| Term | dangerous goods labeling |
| Language | EN |
| Word count | 125 |
| Last updated | 2026-06-16 |
| Source | https://unece.org/transport/adr |

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