C-MobILE aligned ARC-IT architecture
graphic
Flows between the components

 
Source Element
Destination Element
Flow Name
Flow Description
Local RSU
Local Traffic Detector
personal location information
Pedestrian, bicyclist, and other non-motorized user locations at an intersection as detected and reported by an RSE.
signal service request
A call for service or extension for a signal control phase that is issued by the RSE for connected vehicles approaching an intersection and/or pedestrians at a crosswalk.  This flow identifies the desired phase and service time.
Local Traffic Detector
Local RSU
intersection control status
Status data provided by the traffic signal controller including phase information, alarm status, and priority/preempt status.
mixed use crossing status
Current pedestrian and other mixed use crossing information including an indication of whether the call button has been activated, the current state of the mixed use crossing signal, and information indicating whether non-motorized users are currently occupying the cross walk.
Local RSU
Smartphone
intersection status
Current signal phase and timing information for all lanes at a signalized intersection.  This flow identifies active lanes and lanes that are being stopped and specifies the length of time that the current state will persist for each lane.  It also identifies signal priority and preemption status and pedestrian crossing status information where applicable.
personal crossing safety information
Current crossing status including permission to cross, crossing time remaining, and warnings in the event that a vehicle reports an imminent intersection infringement that may impact non-motorized users including pedestrians and cyclists.
Smartphone
Local RSU
personal location
The current location (latitude, longitude, and elevation) reported by the personal information device
personal signal service request
A request for right of way from a personal device that indicates the type of traveler (pedestrian, special needs pedestrian, bicyclist, etc.), anticipated time of arrival, travel path, and crossing duration.
Local RSU
C-MobILE Vehicle
intersection status
Current signal phase and timing information for all lanes at a signalized intersection.  This flow identifies active lanes and lanes that are being stopped and specifies the length of time that the current state will persist for each lane.  It also identifies signal priority and preemption status and pedestrian crossing status information where applicable.
intersection safety warning
A warning of an imminent unsafe vehicle infringement at an intersection that may endanger other vehicles or pedestrians.  This allows vehicles approaching the intersection to be warned in the event of an imminent red light or stop sign violation or potential infringement on an occupied crosswalk.  All connected vehicles at the intersection receive the warning, including both the infringing vehicle and other vehicles at or near the intersection.
proxied personal location
Relay of pedestrian, bicyclist, and other non-motorized user locations at an intersection.  This relay or rebroadcast of personal locations supports coordination between motorized and non-motorized users that do not have interoperable communications capability.
C-MobILE Vehicle
Local RSU
vehicle location and motion
Data describing the vehicle's position, heading, speed, acceleration, transmission, steering wheel angle, braking status, size information, and trajectory.
intersection infringement info
Vehicle path information sent by a vehicle that is violating the stop bar at an intersection. This flow includes the vehicle’s position, heading, speed, acceleration, transmission, steering-wheel angle, braking status, size information and trajectory.
Smartphone
C-MobILE Vehicle
personal location
The current location (latitude, longitude, and elevation) reported by the personal information device
C-MobILE Vehicle
Smartphone
vehicle location and motion
Data describing the vehicle's position, heading, speed, acceleration, transmission, steering wheel angle, braking status, size information, and trajectory.