Q-WARN Scenario 2:
Fixed Queue Generation Points
Fixed Queue Generation Points
81
Q-WARN App
Data
Collection
Algorithm
Data Environment
Vehicle A
On-board
Sensors
Data
Collection
Data
Broadcast
Algorithm/
Decision
Engine
Vehicle B
On-board
Sensors
Data
Collection
Data
Broadcast
Algorithm/
Decision
Engine
Roadway
Detectors
DMS
VSL
3rd Party Data
Sources
Data Feeds
Weather Feeds
1
1
Vehicle broadcasts status information (speed, heading, location, etc.)
2
Data
collected in Data Environment
2
3
3
Fixed queue generation point system (toll/border crossing/tunnel/SCADA) sends queue alert to Q-WARN app
4
Q-WARN app generates queue warning messages to affected upstream vehicles
4
5
Vehicles provide appropriate queue warnings to drivers
5
Arterial TMC
DSS
FMS
Freeway TMC
DSS
FMS
Toll System
Border Crossing
Tunnel/SCADA System
Data Feeds