#
U.S. Department of
Transportation
Research and Innovative
Technology Administration
Characteristics of Communications Types
Safety
Messages
Exchanges certificates
(security payload)
Dynamic Mobility Applications
may span signal phase and
timing through tolling transactions
Security credentials
for mobile terminals (vehicles) updated
and managed
Unique V2I communication:
not generally location
oriented
Volume of
data may be substantial
Vehicle
To
Infrastructure
Vehicle
To
Vehicle
Security
Management
Communication exchanges are distinct, which
complicates a one-size fits all approach
Communication
Needs
![C:\Users\554760\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\S8A1TOL8\MC900434832[1].png](slide0326_image028.gif)
