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U.S. Department of Transportation
Triscallion_Black
Cellular and Dual-Mode Traveler-Centric Devices:
Strawman Configurations and Capabilities
▪Traveler Itinerary Data:
–origin, destination, departure time, desired arrival time, purpose, transit special request (e.g., need for bike rack, wheelchair)
▪
▪Mobile Devices:
–Can support a range of mobility and safety applications
–DSRC Range: 50 meters
Mobile Device Type
Comm.  Technology
Data Generated
Frequency
In Range of an RSE
Not in Range of an RSE
M1
Cellular
Position + Speed + Traveler Itinerary Data
180 seconds
180 seconds
M2
DSRC + Cellular (Dual Mode)
Position + Speed
0.1 seconds via DSRC
0.1 seconds via DSRC
AND
180 seconds via Cellular
Traveler Itinerary Data
180 seconds via DSRC
180 seconds via Cellular
Dual mode mobile device, when in range of an RSE
•Transmits position and speed via DSRC every 0.1 seconds
•Transmits Traveler Itinerary data every 180 seconds via DSRC
Dual mode device, when NOT in range of an RSE
•Transmits position and speed via DSRC every 0.1 seconds
•Transmits position and speed and traveler Itinerary Data every 180 seconds via cellular