ISO 19091: Intelligent transport systems -- Cooperative ITS -- Using V2I and I2V communications for applications related to signalized intersections
| Source Element | Destination Element | Flow |
|---|---|---|
| Metro Transit Vehicle (bus) | City of St Louis Traffic Signals | local signal priority request |
| Illinois DOT Traffic Signal | local signal priority request | |
| Metro Transit Field Equipment | local signal priority request | |
| Missouri DOT Traffic Signal | local signal priority request |