rail crossing request
A request for highway-rail intersection status or a specific control request intended to modify HRI operation.
| Source | Flow | Destination |
|---|---|---|
| Traffic Management Center | rail crossing request | ITS Roadway Equipment |
A request for highway-rail intersection status or a specific control request intended to modify HRI operation.
| Source | Flow | Destination |
|---|---|---|
| Traffic Management Center | rail crossing request | ITS Roadway Equipment |