VII System Architecture Ron Heft Nissan Technical Center North America

Overview Where we Stand System architecture and components Onboard Equipment (OBE) Roadside Equipment (RSE) Backside message switch Use case / data flow examples Traffic probe data (V–I center) Intersection signal violation warning (I local–V)

Where We Stand Architecture and Technology Committee Co-Chaired by: George Gilhooley, Florida DOT Ron Heft, Nissan Initial Architecture Subject to change Feasibility and Functional testing planned

System Picture Vehicle Side Road Side Back Side End User Driver Vehicle and Road Data OBE RSE DSRC Roadside Road Data DSRC Vehicle-to-Vehicle Infrastructure Data System Vehicle Side Road Side Back Side

System Block Diagram Driver End User Vehicle Data Driver HMI Subscriber Applications Onboard Equipment Message Switch 5.9 DSRC Roadside Equipment

The Onboard Equipment DSRC Antenna GPS Antenna HMI Devices DSRC Transceiver GPS Receiver HMI Devices Interface Application Processor Chassis Body Devices Vehicle Services Interface CAN

The Roadside Equipment DSRC Antenna GPS Antenna DSRC Transceiver GPS Receiver Backhaul Communications Interface RSU Application Processor Local Controller Interface Signal Controller

Backside Message Switch Private Services Backhaul Communications Interface Vehicle Proxy Server IPv6 Router Public Subscriber Applications AID Message Agent

Privacy and Security No permanent public identifier in the OBE Encrypted communications between RSE and OBE Licensed transmitters Both RSE and OBE No message retention in the system Authenticated sources for all messages Authorized end users

Example Traffic Probe Data End User Vehicle Data Vehicle CAN Bus and GPS User Access Application SAE/AASHTO DSRC Probe Message Subscriber Applications OBE Message Switch Application Database 5.9 DSRC RSE

Example Intersection Signal Violation Warning Driver Intersection Controller Violation Alert Driver HMI SAE/AASHTO Signal Phase Message Vehicle Data Signal Controller State OBE RSE 5.9 DSRC ISVW RSE Application ISVW OBE Application

Summary Initial architecture framework Meets use cases Flexible applications support Addresses security and privacy Low demand on backside technologies Driver End User Vehicle Data Driver HMI Subscriber Applications Onboard Unit Message Switch 5.9 DSRC Roadside Unit