Table of Contents

1. Overview
   1.1 Scope
   1.2 Purpose
   1.3 Existing applications
2. References
3. Definitions, abbreviations and acronyms
   3.1 Definitions
   3.2 Abbreviations and acronyms
4. HRI interface data communication protocols
   4.1 HRI interface protocol requirements
   4.2 HRI interface protocol architecture
   4.3 HRI interface protocol specifications
5. HRI messages
   5.1 HRI rail crossing operational state (9.4.40)
   5.2 HRI approaching train information (9.4.41)
   5.3 HRI approaching train information request (9.1.41)
   5.4 HRI wayside equipment status (9.4.42)
   5.5 HRI wayside equipment status request (9.1.42)
   5.6 HRI roadway obstacle detection state (9.4.43)
   5.7 HRI ATC equipment status (9.4.44)
   5.8 HRI ATC equipment status request (9.1.44)
   5.9 HRI user-specific wayside message (9.4.45)
   5.10 HRI user-specific wayside message request (9.1.45)
   5.11 HRI user-specific ATC message (9.4.46)
   5.12 HRI user-specific ATC message request (9.1.46)
Annex A (informative) ATCS datagram format
Annex B (informative) HRI message transfer examples
Annex C (informative) HRI message flow examples
Annex D (informative) Bibliography

Abstract

Defines logical and physical interfaces and the performance attributes for the interface between the rail subsystem and the highway subsystem at a highway rail intersection.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	Institute of Electrical & Electronics Engineers
Pages
ISBN