TBG3 has the primary mission to identify EDIFACT standard message requirements for the transfer of transport data and to develop and maintain United Nations Standard Messages (UNSM"s) for transport and logistics purposes. TBG3 develops the transport Business Models, the transport Core Components and Business Information Entities, in accordance with the UML and UMM methodology, such as to develop standard XML documents for the transport and logistics sector. TBG3 also deals with the relevant Codes lists including UN Recommendations.

TBG3 through its sub-Group ITIGG (International Transport Implementation Guidelines Group) has developed recommendations for harmonization of implementation guidelines for EDIFACT Transport messages and encourages all organizations to endorse the ITIGG rules.

TBG3 ensures that, as far as possible, the needs of all modes of transport are taken into account and that message development and subsequent coordination is achieved by a process of consensus.

TBG3 is part of the UN/CEFACT Forum as a subgroup of TBG.

TBG3 consists of representatives from all modes of transport, shippers and different parties and activities involved in the transport chain over the world, be it from national delegations or international organizations.

The Chair of TBG3 is Dominique Vankemmel (France) and the Vice-Chairs are Yoshi Kito (Japan) and Simon Spoormaker (The Netherlands).

The technical and secretarial support of TBG3/ITIGG is provided by the Foundation BEST (Business Group for Electronic Commerce Standards in Transport).

TBG3 liaises closely with any other transport message development groups, in order to ensure that standard messages and related developments are coordinated on a worldwide level. It also liaises with other groups within the UN/CEFACT Forum especially with industrial and commercial user communities (Trade, Finance, Customs, Insurance, Statistics?) to ensure common e-Commerce practices in Transport across sectors.