RTO Hazardous Goods Test key terms

A four-digit identification code assigned by the United Nations to a specific dangerous good or group of goods, used worldwide in transport documents, labels, and placards to quickly identify the substance.

The official name of a dangerous good as listed in the UN Model Regulations or applicable dangerous goods code, used in documentation and marking to ensure clear, standardised identification.

One of nine broad categories (e.g., explosives, flammable liquids, toxic substances) defined by the UN that group dangerous goods by the type of risk they present during transport.

A division (I, II, or III) within certain hazard classes that indicates the degree of danger, with I being the most severe, used to determine packaging and stowage requirements.

A diamond-shaped warning label affixed to packages or containers, showing the hazard class number, symbol, and colour code to communicate the primary risk of the contents.

A larger warning sign, typically diamond-shaped, mounted on the exterior of a vehicle or freight container to indicate the hazard class of the goods being carried.

A rectangular reflective plate displayed on vehicles carrying dangerous goods, showing the UN number and hazard identification number to inform emergency responders of the load.

A transport document, often called a shipper's declaration, that provides detailed information about the dangerous goods, including UN number, proper shipping name, class, packing group, and quantity.

A document kept in the vehicle cab that summarises the hazards of the load and provides emergency response instructions for drivers and responders in case of an incident.

A code in dangerous goods regulations that specifies the type and performance level of packaging permitted for a particular substance, ensuring containment under normal transport conditions.

Packaging that has passed specified performance tests (e.g., drop, stack, leakproof) and bears the UN mark, confirming it meets regulatory standards for the goods it contains.

The practice of keeping incompatible dangerous goods apart during transport, either by distance, barriers, or separate compartments, to prevent dangerous reactions if contents escape.

The safe arrangement and securing of packages and containers within a vehicle to prevent movement, damage, or leakage during transit, taking into account compatibility and weight distribution.

The use of restraints such as straps, bars, or air bags to prevent cargo from shifting during transport, which is critical for maintaining vehicle stability and preventing package damage.

A portable device carried on vehicles transporting dangerous goods, used to fight small fires; regulations specify minimum sizes and types (e.g., dry powder) based on the goods carried.

A collection of absorbent materials, containment tools, and protective equipment kept on the vehicle to enable the driver to safely manage minor leaks or spills of dangerous goods.

Instructions, often in the form of a transport emergency card or written procedure, that tell the driver and responders how to react to an incident involving the dangerous goods being carried.

The European Agreement concerning the International Carriage of Dangerous Goods by Road, which sets harmonised rules for classification, packaging, documentation, and vehicle equipment across participating countries.

A document issued to a driver who has completed required dangerous goods training, confirming competence in regulations, hazards, and emergency procedures; it must be carried during transport.

A code assigned to dangerous goods that indicates which tunnel categories the vehicle may pass through, based on the risk of a major incident in confined spaces.

A rule that prohibits or limits the movement of certain dangerous goods through specific areas, such as urban centres, tunnels, or sensitive zones, to reduce risk to the public.

A regulation that controls where and for how long a vehicle carrying dangerous goods may park, often requiring secure locations or supervision to prevent theft or unauthorised access.

A formal record of any accident, spill, or near-miss involving dangerous goods, documenting what happened and the response, used for regulatory compliance and safety improvement.

The actions taken to contain, absorb, or neutralise a release of dangerous goods, including evacuation, use of spill kits, and notification of authorities, to minimise harm.

The maintenance of documents such as training records, transport documents, and incident reports for specified periods, to demonstrate compliance and support investigations.

A two- or three-digit code shown on the upper half of an orange-coloured plate, indicating the specific hazard of the substance (e.g., 33 for highly flammable liquid).

A provision allowing small quantities of certain dangerous goods to be transported under relaxed rules, provided packaging and marking requirements are met, reducing regulatory burden.

A very small quantity of dangerous goods that is exempt from most regulatory requirements, provided it is packaged and marked according to specific provisions.

A letter assigned to explosives that indicates which substances can be transported together without increasing risk, used in segregation and stowage decisions.

A document confirming that a vehicle meets the required safety equipment standards for carrying dangerous goods, such as fire extinguishers and electrical safety, often subject to periodic inspection.

The requirement that a driver be physically and mentally fit, free from fatigue, alcohol, or drugs that impair judgement, to safely operate a vehicle carrying dangerous goods.

Discarded material that poses a threat to health or the environment, often subject to additional transport rules and documentation beyond those for unused dangerous goods.

A document providing detailed information about a hazardous chemical, including hazards, handling, and emergency measures, used by shippers and drivers to understand the risks.

An enclosure used to consolidate multiple packages of dangerous goods for convenience, which must itself be marked and labelled to reflect the hazards of the contents.

A transport emergency card carried in the vehicle that provides immediate guidance on actions to take in case of fire, spill, or accident involving the dangerous goods.

The lowest temperature at which a liquid gives off enough vapour to ignite momentarily when exposed to a flame, used to classify flammable liquids and determine handling precautions.

A dangerous good that is transported at a temperature of 100°C or more (or above its flashpoint), requiring special packaging and handling to prevent burns and ignition.

A dangerous good known or reasonably expected to contain pathogens that can cause disease in humans or animals, assigned to Class 6.2 and subject to strict packaging and documentation rules.

Any material containing radionuclides that exceeds specified activity limits, assigned to Class 7 and subject to unique packaging, labelling, and route control requirements.