Information on the most important topics and organizations:

Under the European Agreement concerning the International Carriage of Dangerous Goods by Road (ADR), dangerous goods are considered to be substances and items that due to the risk of explosion, fire, radiation, toxicity, corrosiveness or other properties may cause noteworthy damage to human health or property or the environment during the transport process. That makes it extremely important for the hauliers of dangerous goods to have trucks with special equipment and trained drivers with valid ADR certification and the handling of dangerous goods is in conformity with legal acts.

Higher rates are charged for dangerous goods for the following reasons.
ordinary roads, bypasses and tunnels may not always be used with ADR goods
Ferry fares are significantly higher and all ships may not accept dangerous goods
spending on ADR training and appropriate equipment
Transport of dangerous goods on European roads is governed by the ADR agreement on road transport of dangerous goods Hazardous goods are divided into different categories:

Class 1. Explosives
Class 2. Gases
Class 3. Flammable liquids
Class 4.1 Flammable solids
Class 4.2 Flammable substances
Class 4.3 Substances which, in contact with water, emit flammable gases
Class 5.1. Oxidizing substances
Class 5.2. Organic peroxides
Class 6.1. Toxic substances
Class 6.2. Infectious substances
Class 7. Radioactive material
Class 8. Corrosive substances
Class 9. Miscellaneous hazardous substances and articles

Every dangerous substance has its own identification number, which is internationally agreed and defined. It is denoted by the letters UN followed by a four-digit number. For example, UN 1223 petroleum.
The person ordering transport must know the UN number, as it is the basis on which carriage conditions are agreed and for defining the goods as hazardous or especially hazardous.
The consignor of the dangerous goods must package the goods pursuant to the requirements and furnish the haulier with a bill of lading and the driver with a written safety guide.

Explosive substances - Class 1, not including sub-classes 1.4 and 1.6; very strong toxins – class 6.1; and radioactive materials – class 7 are considered especially dangerous goods.
The transport route for especially dangerous goods shall be coordinated by the competent authority (such as the Road Administration and Rescue Board), which must be valid at least five days before the beginning of the carriage.

The driver is obliged to present, at the request of the customer, a valid ADR certificate, demonstrate the existence in the truck of the equipment meeting the relevant ADR classification, and perform all manner of cooperation with the customer in handling, loading and securing the dangerous goods. The driver must also open the ADR hazard markings on the truck when commencing carriage. The consignor of the goods is obliged to provide the driver with the ADR document translated into the native language for the specific shipments.

Higher rates are charged for dangerous goods for the following reasons.
ordinary roads, bypasses and tunnels may not always be used with ADR goods
Ferry fares are significantly higher and all ships may not accept dangerous goods
spending on ADR training and appropriate equipment
Carriage of hazardous substances in limited quantities:
The consignors of dangerous goods packaged in limited quantities must notify the haulier prior to the carriage in a provable form of the gross mass of all such goods undergoing such carriage.

READ THE RULES FOR TRANSPORT OF DANGEROUS GOODS HERE

The consignors of dangerous goods packaged in limited quantities must notify the haulier prior to the carriage in a provable form of the gross mass of all such goods undergoing such carriage.