IEEE 1570-2002: Standard for the Interface Between the Rail Subsystem and the Highway Subsystem at a Highway Rail Intersection (Standard* Activity)
| Source | Architecture Flow | Destination |
|---|---|---|
| Roadway | hri operational status | Wayside Equipment |
| Roadway | intersection blockage notification | Wayside Equipment |
| Wayside Equipment | arriving train information | Roadway |
| Wayside Equipment | track status | Roadway |
