ENV 12315-2:1996

1. Scope
    1.1 General
    1.2 Embeddance in ISO-Layer model
2. Normative References (Normative)
3. Definitions (Normative)
    3.1 Definitions
    3.2 Symbols and Abbreviations
4. General Structure: Uplink Data Set (Normative)
    4.1 Overall Structure
    4.2 Format of the Telegram
    4.3 Contents of the Telegram
    4.4 Autonomous Parts during a Journey
    4.5 A telegram cannot be sent
5. Data Organization Structure (Telegram Format)
    (Normative)
6. General Data Table (ID 0) (Normative)
    6.1 General
    6.2 Data Coding
7. Route Description Table (ID 1) (Normative)
    7.1 General
    7.2 Data Coding
8. Measurements Table (ID 2) (Normative)
    8.1 General
    8.2 Data Coding
9. Maintenance Table (ID 3) (Normative)
    9.1 General
    9.2 Data Coding
10. Evaluation Table (ID 4)
    10.1 General
    10.2 Data Coding
11. Checksum Table (ID 63) (Normative)
    11.1 General
    11.2 Data Coding
    11.3 Checksum Algorithm
Annex A Limitations (Normative)
Annex B Fixed Codings (Normative)
Annex C Summary of Tables (Normative)

A Centrally Determined Route Guidance (CDRG) system using Dedicated Short Range Communication (DSRC) is based on infrastructure and equipped vehicles. The Route Guidance Information (RGI) is generated by a Central Office (CO) and distributed via DSRC to the equipped vehicles. To enable dynamic RGI the Central Office needs real time traffic flow data. This data is provided through the system itself using vehicles as probes.