Vehicle and
Traveler
Data Source Assumptions
Data Source Assumptions
8
•Nearly all travelers
carry GPS-enabled mobile devices
•Some travelers opt-in
to configure their mobile devices to contribute data
regarding position, time and trip characteristics
•Many light vehicles
opt-in to contribute data, some broadcast HIA
messages
•Many transit vehicles
contribute position, passenger count, and other data, some broadcast HIA
•Many freight vehicles
provide data on position, credentials and other data,
some broadcast HIA
•Most emergency
vehicles broadcast HIA and vehicle type data
VEHICLE
TRAVELER
“many”
“some”
“where needed”
INFRASTRUCTURE