Dangerous Goods Labelling: ADG Code PART 5 – Labelling, Marking and Placarding
Published: July 25, 2025| Last Updated: July 25, 2025
Dangerous goods are substances that are flammable, toxic, infectious, corrosive, explosive, radioactive, or otherwise pose an immediate risk to people, property, or the environment.
Each dangerous good is classified under a specific classification number from 1-9, and must be labelled accordingly on the materials themselves and their transport vehicles (known as placarding), as governed by Part 5 of the Australian Dangerous Goods Code, 2024, Edition 7.9, the current latest version as set by the National Transport Commission.
This article provides the official download files to each label and summarises the relevant sections related to labelling from the ADG code.
Dangerous Goods Class Labels
ADG Code Part 5 Overview
Chapter 5.1: General Provisions
Section 5.1 of the ADG Code outlines general requirements for the preparation of dangerous goods consignments, with a focus on marking, labelling, and placarding. It includes rules for how to handle overpacks (bundled packages), how to label empty packaging that may still present a hazard, and what to do when different dangerous goods are packed together. The emphasis is on ensuring that the correct signage is applied and remains visible, so that all parties involved in the transport process can clearly identify the nature of the goods being moved.
Chapter 5.2: Marking and Labelling
Chapter 5.2 of the ADG Code covers how dangerous goods must be marked and labelled when packaged for transport. This includes requirements for displaying the correct UN number, shipping name, and hazard class symbols on the outside of each package.
Markings are the written identifiers—like “UN 3265” or a product name—that help identify the contents. Labels are the diamond-shaped hazard signs that indicate the type of risk, such as flammable, toxic, or corrosive. Both must meet size, visibility, and durability standards to ensure they remain clear during handling and transport.
There are also special labelling provisions for things like lithium batteries, environmentally hazardous substances, and infectious materials. Some packages need arrows showing the correct orientation, or additional marks depending on their contents and how they’re packed. In most cases, primary and secondary hazards must both be shown, unless exemptions apply.
Overall, this section ensures every dangerous goods package carries clear and consistent signs to communicate what it contains and how it must be handled.
Chapter 5.3: Placarding and Marking of Cargo Transport Units, Placardable Units and Bulk Containers
Chapter 5.3 covers when and how placards—the large hazard signs displayed on trucks, containers, and bulk tanks—must be used during dangerous goods transport. These signs alert emergency services, handlers, and the public to the presence and nature of hazardous loads.
Placards are required on vehicles or containers when the load meets certain thresholds set out in the Code. The type and number of placards depend on the class of goods, whether they’re packaged or in bulk, and whether they’re carried in tanks, freight containers, or intermediate bulk containers (IBCs). Some vehicles must also display Emergency Information Panels (EIPs) showing UN numbers, proper shipping names, and Hazchem codes.
The chapter also sets rules for placard size, design, placement, and durability, and includes specific requirements for road vehicles, rail wagons, portable tanks, bulk containers, and intermodal units. In cases where multiple classes of dangerous goods are carried, a mixed class placard may be used.
Special markings, such as those for elevated temperature or environmentally hazardous substances, may also be required. Placards must be removed once a container or vehicle has been fully cleared of dangerous goods.
In short, Chapter 5.3 ensures that the external signage on transport units matches the nature and volume of dangerous goods being carried, so that everyone involved in the movement or handling of the load can respond appropriately and safely.
Chapter 5.4: Reserved
Chapter 5.4 is marked as reserved and does not contain any active requirements under the ADG Code. While this section is used in some international frameworks for transport documentation, in the Australian Code those details are found elsewhere—mainly in Part 11 and Appendix B. The reserved status helps maintain alignment with the overall structure of the UN Model Regulations.
Chapter 5.5: Special Provisions
Chapter 5.5 outlines additional marking, placarding, and documentation requirements for specific situations that fall outside standard packaging and transport scenarios. These provisions apply only in certain cases and are intended to manage less common, but still significant, risks during transport.
Section 5.5.2 covers cargo transport units that have been fumigated (UN 3359). Even if no other dangerous goods are present, these units must display a clear fumigation warning sign at all access points, and documentation must include details like the fumigant used and time of application—unless the unit has been fully ventilated and unloaded.
Section 5.5.3 applies to packages and transport units that use substances like dry ice or refrigerated nitrogen to keep items cold during transit. While these substances aren’t dangerous goods in the usual sense when used this way, they can still pose serious risks (like oxygen displacement). The section sets rules for package design, ventilation, and warning signage, especially for units that haven’t been ventilated before transport.
Section 5.5.4 addresses dangerous goods that are part of equipment in use during transport—such as lithium batteries in GPS trackers or data loggers. These are exempt from most of the Code as long as the equipment is functional, tested, and securely designed for transport.
Navigating ADG Compliance in Your Business
For businesses handling hazardous materials, understanding your obligations under the ADG Code is crucial for safety and avoiding costly errors. The core requirements covered in Part 5 mandate that every substance is correctly classified, every package is accurately labelled and marked, and every transport vehicle is properly placarded.
While this guide provides a summary, companies must always defer to the official Australian Dangerous Goods (ADG) Code, published by the National Transport Commission (NTC), as the sole binding source for compliance. Given the code’s complexity, partnering with a logistics specialist is the most effective way to ensure every shipment meets these stringent legal standards and mitigates risk.
Freight Assist Australia: Your Compliant DG Partner
Navigating the dense regulations of the ADG Code demands expertise. Freight Assist Australia simplifies this complexity by providing end-to-end logistics solutions for dangerous and hazardous goods, built on a foundation of safety and strict compliance.
We manage your hazardous materials with the specialised care they require, from our licensed DG storage facilities to final delivery in our compliant vehicle fleet. By partnering with us, you entrust your goods to a dedicated expert, ensuring your supply chain is not only efficient but also fully compliant with national safety standards. Choose Freight Assist Australia for a reliable, secure, and seamless solution to your dangerous goods logistics needs.