It determines the scope of the dangerous goods regulations in general regulates the transport of dangerous goods.

This Directive applies to the transport of dangerous goods by road, by rail or by inland waterway within or between Member States, including the activities of loading and unloading, the transfer to or from another mode of transport and the stops necessitated by the circumstances of the transport. (Article 1)

While the ADR, RID and ADN lay down uniform rules for the safe international transport of dangerous goods, this regulation is on how to extend such rules to national transport in order to harmonize across the EC and ensure the proper functioning of the common transport market.

The Directive applies to tunnels of more than 500 meters, in the Trans-European Road Network- TERN), included in the EEC agreement from 1999. It specifies both technical and operational requirements, and has been implemented in Norway (with some adjustments) through the Regulation on minimum safety requirements for certain tunnels [Forskrift om minimum sikkerhetskrav til visse vegtunneler (tunnelsikkerhetsforskriften)] of 15.05.07. Annex 1 is on safety measures, and chapter 3.7 of this annex, specifies such measures with respect to the transport of dangerous goods.

The Directive applies to the design, manufacture, conformity assessment and periodic reassessment of transportable cylinders, tubes, cryogenic vessels and tanks for transporting gases as well as hydrogen cyanide, hydrogen fluoride and hydrofluoric acid. It also covers their associated valves and other pressure equipment. The Directive defines 3 categories for pressure equipment, based on its pressure volume product (P.V) in bar litres and hence its stored energy