ENV 13777 : 2000

1 FOREWORD [INFORMATIVE]
2 INTRODUCTION [INFORMATIVE]
3 SCOPE [NORMATIVE]
4 NORMATIVE REFERENCES
5 GENERAL ARCHITECTURE
      5.1 Overview [informative]
      5.2 Levels of Operation [normative]
6 SITUATION DATA
      6.1 Definitions [normative]
      6.2 Situation data [normative]
      6.3 Location referencing methods [normative]
      6.4 Situation Element message [informative]
      6.5 Physical Format [informative]
7 TRAFFIC DATA
      7.1 Definitions [normative]
      7.2 Exchange description [informative]
      7.3 Measurement point table [normative]
      7.4 Traffic Data message [informative]
      7.5 Physical format [informative]
      7.6 Traffic data model [informative]
8 COMMON FUNCTIONS
      8.1 Introduction [informative]
      8.2 Supplier and Client: Interchange agreement
             [informative]
      8.3 Supplier and Client: Establish code lists
      8.4 Supplier and Client: Handle location table
      8.5 Supplier and Client: Handle measurement point
             table
      8.6 Situation and element information management
      8.7 Filtering general specifications
      8.8 Supplier: Send data
      8.9 Client: Receive data
      8.10 Supplier and Client: Diversion
      8.11 Client and Supplier: Handle status messages
9 COMMUNICATIONS
      9.1 Protocols [informative]
      9.2 Networks [normative]
10 LEVEL 1 DESCRIPTION
      10.1 Introduction [informative]
      10.2 Functions list [normative]
      10.3 Client Sub-system
      10.4 Supplier Sub-system
11 LEVEL 2 DESCRIPTION
      11.1 Introduction [informative]
      11.2 Functions list [normative]
      11.3 Client Sub-system
      11.4 Supplier Sub-system
12 LEVEL 3 DESCRIPTION
      12.1 Introduction [informative]
      12.2 Functions list [normative]
      12.3 Client Sub-system
      12.4 Supplier Sub-system
13 MESSAGE FORMATS
      13.1 Background Information
      13.2 EDIFACT Interchanges
      13.3 Methods of Location Referencing [normative]
      13.4 Traffic/Travel Situation Information Message
             (TRAVIN)
      13.5 Status Information, Traffic/Travel Route
             Guidance And Planning Message (TRAILS)
      13.6 Traffic/Travel Location Definition Message
             (TRALOC)
      13.7 Traffic/Travel Information Acknowledgement
             Message (TRAVAK)
      13.8 Traffic/Travel Information Request Message
             (TRAREQ)
      13.9 Traffic/Travel Information Catalogue Message
             (TRACAT)
14 CONCEPTUAL DATA MODELS
      14.1 Introduction
      14.2 Situation Conceptual Data Model (Levels 1, 2
             and 3) [informative]
      14.3 Conceptual Traffic Data Model (Levels 1, 2 and 3)
             [informative)
      14.4 Complete Conceptual Data Model of Client At
             Level 3 [informative]
      14.5 Complete Conceptual Data Model of Supplier at
             Level 3 [informative]
      14.6 Domains [informative]
15 DEFAULT PHRASES PER DATA OBJECT [INFORMATIVE]
16 BIBLIOGRAPHY

Specifies the methodology, functions and message structures for exchange of data between traffic and travel information centres managed by different road operators.