DD ENV 12315-1:1997

Contents (Informative)
National Foreword
Foreword (Informative)
Introduction (Informative)
Title (Normative)
1. Scope (Normative)
    1.1 General
    1.2 Embeddance in OSI 7-Layer model
    1.3 Applications
         1.3.1 Route Guidance Data
         1.3.2 Messages and Warnings
         1.3.3 Car Park Info
         1.3.4 Park & Ride Info
2. Normative References (Normative)
3. Definitions (Normative)
    3.1 Definitions
    3.2 Symbols and Abbreviations
4. Data Organization Structure (Normative)
    4.1 File Structure
    4.2 Table Structure
    4.3 Checksums
         4.3.1 Purpose of checksums
         4.3.2 Checksum Algorithm
    4.4 Encryption
    4.5 Organization Table - ORG (TID 0)
         4.5.1 Item Descriptions
5. General Data - GENDAT (TID 1) (Normative)
    5.1 Item Description
         5.1.1 Fixed Data Part
         5.1.2 Optional Data Part
6. Entries and Exits (Normative)
    6.1 General
    6.2 Types of Beacon Junctions
    6.3 Criteria for the choice of Beacon junctions
    6.4 Exit Description Parameters
         6.4.1 Exit Descriptions for Exits into the
                Guided Road Network
         6.4.2 Exit Description for Exits into the
                Unguided Road Network
         6.4.3 Parameter Examples for different Junction
                Types
    6.5 Principle of Exit Recognition in the Vehicle
         and Position Adjustment
    6.6 Entry/Exit Definition - ENEX (TID 2)
         6.6.1 Item Description
7. Destination Handling (Normative)
    7.1 General
         7.1.1 Beacon Region
         7.1.2 Outer Regions
         7.1.3 Hierarchial Division and Coding
         7.1.4 Principles of the Decoding Algorithm
    7.2 General Rules for Coding of the Data Tables
         7.2.1 Boundaries of the Overview Package -
                BOVP.(TID 10)
         7.2.2 Destination Zones of the Beacon Region -
                DZBR (TID 11)
         7.2.3 Boundaries of the Outer Regions -
                BOUT p,. (TID 12 25)
         7.2.4 List of Corner Point Indices
         7.2.5 Corner Points of all Regions - COPxxx
                (TID 27,28,29 42)
         7.2.6 References of Route Guidance Information -
                REF_RGI. (TID 44)
         7.2.7 Route Guidance Information - RG_INFO.
                (TID 45)
8. Vehicle and Driver Specific Route Choice (Normative)
    8.1 General
    8.2 Coding of the Data Tables
         8.2.1 Route Choice Table - RCT (TID 3)
         8.2.2 Data Section: Road Restriction Groups
         8.2.3 Data Section: Route Type Groups
         8.2.4 Data Section: Restriction Class Matrix
9. Definition of Links (Normative)
    9.1 General
    9.2 Coding of the Data Tables
         9.2.1 General format of LINK_PT,LINK_TAB and
                LINK_ADD (TID 50,51,52)
         9.2.2 Detailed description of LINK_PT (TID 50)
         9.2.3 Description of LINK_TAB (TID 51)
         9.2.4 Detailed Description of LINK_ADD (TID 52)
    9.3 Link related Text Messages - LINK_TEXT (TID 53)

10. Definition of Link Chains (Normative)
    10.1 General
    10.2 Description of link chains: LC_REL., LC_QUEUE.
         (TID 55,56
Annex A Limitations (Normative)
Annex B Summary of Tables (Normative)
Annex C Illustrations (Informative)
Annex D Guideline for System Designer (Informative)

Provides the framework to enable the providers of TTI to supply information to a large number of equipped vehicles and for in-vehicle equipment to receive, process and display the messages.