# Dangerous goods operating instructions

*Last updated: 2026-06-16*

> Safe and legally compliant handling of hazardous materials throughout the transport chain requires clear operating instructions.

Safe and legally compliant handling of hazardous materials throughout the transport chain requires clear operating instructions. These documents specify how dangerous substances must be packaged, labeled, documented, and managed in emergencies, drawing on the applicable international frameworks: ADR (road), RID (rail), IMDG Code (sea), and IATA DGR (air). Freight forwarders, shippers, and warehouse operators are legally obliged to maintain these instructions and train their personnel accordingly. Key elements include classification into packing groups (I, II, III) based on hazard level, mandatory markings, and the required accompanying documentation. Non-compliance can result in significant fines, shipment refusals, and civil liability.

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

## Quick Facts

| Property | Value |
|---|---|
| Term | Dangerous goods operating instructions |
| Language | EN |
| Word count | 98 |
| Last updated | 2026-06-16 |
| Source | https://unece.org/transport/adr |

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