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U.S. Department of Transportation
Positioning Findings
•Positioning and mapping are closely related
•Two approaches based on application type
•V2I relies on absolute
positioning solution
•V2V relies on relative positioning solution
•Accurate vehicle position at intersection
is critical
•SPaT information is based on a phase to lane assignment
•Requires lane-level accuracy
•Testing technologies at the CVHT in early fall
–Baseline OEM grade GPS
–Inertial Measurement Units (IMU)
–GPS code and
carrier solutions (correction
messages)