Transport of Dangerous Goods – What the Client Should Know

In the transport of dangerous goods (TDG), the client plays a key role in ensuring that the substance to be transported is correctly classified, packaged, labeled, and documented in accordance with applicable legislation. Regardless of whether the transport is carried out by the client or outsourced to a transport company, the client must know whether the substance falls under TDG regulations and what requirements apply, for example in terms of ADR regulations, documentation, and the responsibilities of the parties involved.

What Does TDG Mean?

TDG is an abbreviation for transport of dangerous goods. It is a general term that covers the transport of substances classified as dangerous, regardless of the mode of transport. TDG transport refers to the movement of substances and items that may pose a risk to people, the environment, or property. These include, for example, flammable liquids, gases, explosives, and corrosive substances.

What Is ADR Transport?

ADR transport refers specifically to the road transport of dangerous goods in accordance with international regulations. It is an international agreement governing the road transport of dangerous goods and forms part of the broader TDG regulatory framework. For many clients, TDG/ADR may seem complex, but in practice it is about preparation, accurate information, and choosing an experienced transport partner.

When the basics are handled correctly at the ordering stage, TDG/ADR transport becomes a safe, controlled, and reliable part of the supply chain. TDG typically refers to domestic transport, whereas ADR is used when referring to international transport.

Regulations and Standards

ADR is based on an international agreement that regulates the road transport of dangerous goods. The regulations cover, among other things, the substances being transported, vehicles, driver training, packaging, labeling, and documentation. These regulations are updated regularly, which makes up-to-date knowledge essential for all parties in the transport chain.

For sea transport, the IMDG Code is used, and for air transport, the IATA-DGR regulations apply.

Classification of Dangerous Goods

Dangerous substances and articles are classified in transport regulations as follows:

1. Explosives
2. Gases
3. Flammable liquids
4.1 Flammable solids, self-reactive substances, and desensitized explosives
4.2 Substances liable to spontaneous combustion
4.3 Substances which, in contact with water, emit flammable gases
5.1 Oxidizing substances
5.2 Organic peroxides
6.1 Toxic substances
6.2 Infectious substances
7. Radioactive materials
8. Corrosive substances
9. Miscellaneous dangerous substances and articles

Responsibilities of the Consignor and Carrier

The consignor is responsible for ensuring that the dangerous substance is correctly named, assigned the correct UN number, and classified in the appropriate hazard class. In addition, the consignor must make the proper entries in the consignment note. The carrier, in turn, has the right to rely on the consignor’s classification and the accuracy of the information provided in the consignment note (Heiskanen 2017).

What the Client Must Declare

From the client’s perspective, the most important thing is to determine whether the substance falls under ADR classification. Once the nature of the substance and its potential risks are known, this information must be communicated to the transport company already at the ordering stage.

Late notification may result in delays, additional costs, or, in the worst case, interruption of the transport.

Providing Accurate Transport Information

In ADR transport, the client’s responsibility is particularly related to providing accurate and sufficient initial information. The classification of the substance, packaging method, markings, and required documentation form the basis for planning the entire transport. When these are in order, the transport company can ensure the use of appropriate equipment, trained personnel, and compliant operating procedures throughout the transport.

Packaging Requirements and Approvals

Packaging used for transporting dangerous goods must be inspected and type-approved by an authorized inspection body. In Finland, these approvals are issued by the Finnish Safety and Chemicals Agency (TUKES). Each package must bear a clear, durable, and easily visible marking of its type approval.

This marking begins with the UN symbol inside an oval, indicating that the packaging is approved for both road (ADR) and sea (IMDG) transport.

Markings, Labels, and UN Numbers

When dangerous goods are transported in a package, it must be fitted with hazard labels corresponding to the substance it contains. These labels must measure 100 mm x 100 mm and are determined based on the information in the consignment note.

In addition, the UN number of the transported substance must be marked on the package. The UN number is a four-digit identification number used internationally to identify dangerous substances. It specifies exactly which substance or group of substances is being transported and helps ensure safe handling and transport across different countries.

The Role of the Transport Company

In professional ADR transport, the role of the transport company is central. An experienced operator has ADR-trained drivers, approved and suitable equipment, and clear operating procedures also for exceptional situations.

The transport company is also responsible for ensuring that vehicle and cargo markings, as well as transport documentation, meet regulatory requirements and that the transport proceeds safely at all stages.

SOPs – Standard Operating Procedures

A significant part of managing ADR transport is based on clear operating procedures, known as SOPs (Standard Operating Procedures). These define how the transport is carried out in practice, who is responsible for each task, and how deviations are handled.

SOPs are not only internal documents of the transport company; they function best when the information provided by the client supports these processes.

Real-time communication and transport tracking are especially important in ADR transport. Up-to-date information flow enables rapid response to changing situations and prevents small issues from escalating into larger problems.

When the status of the transport is continuously known, the supply chain remains controlled and predictable.

Often, the biggest challenge in ADR transport is not the transport itself but choosing the right partner. Price comparison alone does not tell the whole story, as expertise, experience, and reliability are critical in the transport of dangerous goods.

A reliable transport partner helps anticipate risks, follows agreed procedures, and responds quickly to changing situations.

A carefully planned ADR transport supports business operations just like any smooth logistics solution. When responsibilities, requirements, and procedures are clear from the ordering stage, the transport of dangerous goods can be carried out safely and without surprises.

Maantie Trans Oy acts as a reliable partner for its customers in ADR transport, ensuring that transports are carried out in compliance with regulations, safely, and on schedule—as part of a well-functioning and controlled supply chain.