This document establishes the XML encoding of the method of the Road Traffic Message application.
The TPEG-RTM Application is intended to convey information to road users. The information provided relates
to event and some status information on the road network and on associated infrastructure affecting a road
journey. For example, limited information about abnormal operation of links in the network may be included,
such as ferries, lifting-bridges, etc.
The TPEG-RTM Application has the broad objective to allow the generation of Traffic and Travel Information
(TTI) messages, for delivery to the end-user by one or more bearers. A hierarchical methodology has been
developed to allow the creation of messages from a set of TPEG-RTM tables, which are essentially
word-oriented and cover most needs.
These TPEG-RTM tables (essentially word-oriented data object dictionaries) comprise a wide ranging ability
to describe a TTI event and some status information, introducing new precision in a number of areas such as
¿Vehicle types¿, ¿Positional information on the carriageway¿ and ¿Diversion routing advice¿.
It is vital, for further understanding of this document, to have more than a passing understanding of the
TPEG-RTM binary specification which describes, among other things, in a step-by step approach: Message
Management, Level One Classes and how they are structured, hierarchically to provide a full Road Traffic
Message together with the TPEG Location Referencing system.