‹#›
U.S.
Department of Transportation
Basic Safety
Message 1 via
DSRC
Mobility and environmental services
More mobility and environmental services
Basic Safety Message
1 & 2 via
DSRC,
at a regular interval
Basic Safety Message
1 & 2+,
at a regular interval,
via cellular
Even
more mobility and
environmental services
Data
and Mobility
Existing
Probe and Sensor
Probe and Sensor
Freeway Travel Times,
Traffic Volumes and Spot Speed
Traffic Volumes and Spot Speed