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Traveller information (ISO TC 204 WG 10)

Domain of interest

The purpose of WG10 is to address the timely delivery of accurate, relevant information to road users and travellers (end-users), in a form suitable for them to use. This encompasses the broad range of travel modes in urban and interurban areas using different communication means. End-users should have easy access to complete information about their travel alternatives and accurate information on current and expected road and travel conditions to enhance their mobility. Part of the work items are developed in common with CEN/TC 278/WG 4 “Traffic and traveller information”.

WG 10 activities include:

  • The Alert-C standards for RDS-TMC (ISO 14819 series) for traffic information dissemination using analogic radio (FM);
  • The TPEG standards and specifications for different types of bearers. It may be used by digital radios (DAB/DMB) and connected services with the Internet. Two generations have been published:
  • The first generation with the ISO/TS 18234 series for binary content and the 24530 series for XML-based content;
  • The second generation that has superseded the first one with the ISO 21219 series.
  • The graphical data dictionary (ISO 14823 series) that intends to propose a system of standardised codes for existing road traffic signs and pictograms used to deliver traffic and traveller information. The coding system can be used in the formation of messages within intelligent transport systems.

Traffic and Traveller Information via TPEG2

Overview

When the Traveller Information Services Association (TISA), derived from former forums, was inaugurated in December 2007, TPEG development was taken over by TISA and continued in the TPEG applications working group. TISA set about the development of a new TPEG structure that would be UML-based. This has subsequently become known as TPEG Generation 2 (TPEG2).

TPEG2 is embodied in the ISO 21219 series and it comprises many parts covering the introduction, rules, toolkit and application components.

The following classification provides a helpful grouping of the different TPEG2 parts according to their intended purpose. Note that the list below is potentially incomplete, as it is possible that new TPEG2 parts will be introduced in future.

  • Toolkit parts: TPEG2-INV (ISO 21219-1), TPEG2-UML (ISO 21219-2), TPEG2-UBCR (ISO 21219-3), TPEG2-UXCR (ISO 21219-4), TPEG2-SFW (ISO 21219-5), TPEG2-MMC (ISO 21219-6), TPEG2-LRC (ISO/TS 21219-7).
  • Special applications: TPEG2-SNI (ISO 21219-91), TPEG2-CAI (ISO 21219-102), TPEG2-LTE (ISO/TS 21219-24).
  • Location referencing: TPEG2-OLR (ISO/TS 21219-22), TPEG2-GLR (ISO/TS 21219-21), TPEG2-TLR (ISO 17572-2), TPEG2-DLR (ISO 17572-3).
  • Applications: TPEG2-PKI (ISO 21219-143), TPEG2-TEC (ISO 21219-154), TPEG2-FPI (ISO 21219-165), TPEG2-TFP (ISO 21219-18), TPEG2-WEA (ISO 21219-196), TPEG2-RMR (ISO/TS 21219-23), TPEG2-EMI (ISO/TS 21219-25), TPEG2-VLI (ISO/TS 21219-26).

TPEG2 has been developed to be broadly (but not totally) backward compatible with TPEG1 to assist in transitions from earlier implementations, while not hindering the TPEG2 innovative approach and being able to support many new features, such as dealing with applications with both long-term, unchanging content and highly dynamic content, such as parking information.

ISO 21219-1:2023 Intelligent transport systems — Traffic and travel information (TTI) via transport protocol experts group, generation 2 (TPEG2) — Part 1: Introduction, numbering and versions (TPEG2-INV)

Status: Approved

Abstract: This document defines an index to the complete set of TPEG Generation 2 toolkit components and applications. New applications are enumerated with an application identification (AID) as they are added to the TPEG applications family.

Description:

  • NOTE 1 This document will be updated when new applications occur in order to indicate the latest status and the inter-working of the various TPEG specifications. This document will be revised as a new edition every time a new issue of any other specification is issued.

  • NOTE 2 Preliminary AIDs are allocated and managed by TISA. Refer external references below.

Normative References:

There are no normative references in this document.

Relationships to other standards:

ISO TS 21219-13:2025 Intelligent transport systems — Traffic and travel information (TTI) via transport protocol experts group, generation 2 (TPEG2) — Part 13: Public transport information service (TPEG2-PTS)

Status: Approved (under review)

Abstract: This document describes the “public transport information service” (PTS) application, which is intended to cover all modes of public (i.e. collective) transport, both for inter-urban and intra-urban travel. The PTS application is designed to allow the efficient and language-independent delivery of public transport information directly from a service provider to end-users.

Description:

The PTS application design is based on three main use cases.

  • Provision of alert information: an alert is a warning that indicates an emergency situation. This case is specifically relevant for broadcast/push mode, for major deviations or disruptions which are relevant for a large number of travellers. A dedicated alert request is also defined and can be used if a backchannel is available.

  • Timetable information, both scheduled and real time: this information is in some cases relevant for broadcast, e.g. in case of large events for the transport modalities to/from the event site. A dedicated timetable request is also defined and can be used if a backchannel is available.

  • Individual requests for trip information (backchannel is required).

The PTS application focuses on providing core information regarding public transport in order to ensure the compactness of the TPEG application. Specific information as provided in typical public transport apps (e.g. fare information) is not in the scope of this document.

Normative References:

The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

  • ISO 21219-1, Intelligent transport systems — Traffic and travel information (TTI) via transport protocol experts group, generation 2 (TPEG2) — Part 1: Introduction, numbering and versions (TPEG2-INV)
  • ISO 21219-7, Intelligent transport systems — Traffic and travel information (TTI) via transport protocol experts group, generation 2 (TPEG2) — Part 7: Location referencing container (TPEG2-LRC)
  • ISO 21219-9, Intelligent transport systems — Traffic and travel information (TTI) via transport protocol experts group, generation 2 (TPEG2) — Part 9: Service and network information (TPEG2-SNI)
  • ISO 21219-14, Intelligent transport systems — Traffic and travel information (TTI) via transport protocol experts group, generation 2 (TPEG2) — Part 14: Parking information (TPEG2-PKI)
  • ISO 21219-15, Intelligent transport systems — Traffic and travel information (TTI) via transport protocol experts group, generation 2 (TPEG2) — Part 15: Traffic event compact (TPEG2-TEC)

Relationships to other standards:

External References

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