Foreword

Public transport operations

Information relating to

Service interface for real-time

Public transport —

Part 5: Functional service interfaces

— Situation Exchange

This document (CEN/TS 15531-5:2011) has been prepared by Technical Committee CEN/TC 278 ―Road

transport and traffic telematics‖, the secretariat of which is held by NEN.

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent

rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.

This document describes the SIRI Situation Exchange service, one of a modular set of services for the

exchange of Real-time information. The Situation Exchange service (SIRI-SX) is concerned with the exchange

of planned events and unplanned incident data among systems, including incident capture, real-time

management and dissemination systems.

The SIRI Situation Exchange service (SIRI-SX) is an additional functional service based on the European

Technical Specification known as "SIRI" − Service Interface for Real-time Information. SIRI provides a

framework for specifying communications and data exchange protocols for organisations wishing to exchange

Real-time Information (RTI) relating to public transport operations.

The specification for the base SIRI framework on which SIRI-SX is built is presented in three parts:

a) context and framework, including background, scope and role, normative references, terms and

definitions, symbols and abbreviations, business context and use cases (SIRI Part 1: CEN/TS 15531-1);

b) the mechanisms to be adopted for data exchange communications links (SIRI Part 2: CEN/TS 15531-2);

c) data structures for a series of individual application interface modules (SIRI Part 3: CEN/TS 15531-3):

1) Production Timetable (SIRI-PT);

2) Estimated Timetable (SIRI-ET);

3) Stop Timetable (SIRI-ST);

4) Stop Monitoring (SIRI-SM);

5) Vehicle Monitoring (SIRI-VM);

6) Connection Timetable (SIRI-CT);

7) Connection Monitoring (SIRI-CM);

8) General Message (SIRI-GM).

Additional documents are used for additional functional services, to date these are:

Facilities Management (SIRI-FM) service is used to exchange information on the current status of

facilities such as lifts, escalators or ticketing machines. It provides a short description of the facility itself,

expresses any change to its operational status and specifically the accessibility status for the disabled or

those with special needspeople. It provides all the current relevant information relating to all facilities

fulfilling a set of selection criteria (Part 4: prCEN/TS 15531-4).

Situation Exchange (SIRI-SX): this document. The SIRI Situation & Incident Exchange service is used to

exchange information messages between identified participants in a standardised structured format

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CEN/TS 15531-5:2011 (E)

suitable for travel information services. It enables messages to be sent and to be revoked (Part 5:

FprCEN/TS 15531-5, this document).

The XML schema can be downloaded from http://www.siri.org.uk/, along with available guidance on its use,

example XML files, and case studies of national and local deployments. The SIRI-SX service is included in

version 1.3 of the schema onwards.

According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following

countries are bound to announce this Technical Specification: Austria, Belgium, Bulgaria, Croatia, Cyprus,

Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,

Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia,

Spain, Sweden, Switzerland and the United Kingdom.

DD CEN/TS 15531-5:2011

CEN/TS 15531-5:2011 (E)

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