crossing call (Architecture Flow*)
Pedestrian request to cross the roadway. This may be an overt (e.g., push button) request from a pedestrian or the physical presence of a pedestrian that can be detected by sensors or surveillance systems. Pedestrians
Roadway
This Architecture Flow is in the following Service Packages:
- Traffic Signal Control
- Standard Railroad Grade Crossing
- Advanced Railroad Grade Crossing
- Mixed Use Warning Systems

