1	Vehicle Based Data and Availability Brian Cronin, Team Leader, Research, Intelligent Transportation Systems Joint Program Office Research and Innovative Technology Administration, USDOT Brian.Cronin@DOT.GOV
2	Fully Connected Vehicle
3	Basic Safety Message (BSM) Fundamentals Connected V2V safety applications are built around the SAE J2735 BSM, which has two parts BSM Part 1: Contains the core data elements (vehicle size, position, speed, heading acceleration, brake system status) Transmitted approximately 10x per second BSM Part 2: Added to part 1 depending upon events (e.g., ABS activated) Contains a variable set of data elements drawn from many optional data elements (availability by vehicle model varies) Transmitted less frequently No on-vehicle BSM storage of BSM data The BSM is transmitted over DSRC (range ~1,000 meters) The BSM is tailored for low latency, localized broadcast required by V2V safety applications
4	Key Elements of BSM Part 2 Needed for Mobility Applications BSM Parts 1 and 2 via DSRC provides the vehicle data needed to support some localized mobility applications
5	Using Cellular Messages to Augment BSM for Mobility Applications
6	Weather Priority Vehicular Data BSM Part 1 Brake system status Brake applied status Traction control status Anti-lock brake status Stability control status
7	AERIS - BSM Assessment – Data Results
8	AERIS BSM Assessment Summary Assessment results: The BSM Part I satisfies the major part of several AERIS applications that compute eco-trajectories for vehicles. Additional environmental information can improve eco-trajectory computations, but is not required. Many applications do not require low latency. There are two approaches for collecting emissions data: Estimate emissions using BSM Part I data Collect emissions data from the vehicle (requires additions to J2735) The AERIS BSM Assessment Report was shared with the Europeans for consideration for their environmental standards. Environmental data needs are being introduced as part of the SAE J2735 Systems Engineering Project.
9	DSRC Deployment Scenario – Private Vehicles
10	Non-DSRC Deployment Scenario – Private Vehicles
11	Combined Deployment Scenario – Private Vehicles
12	Combined Deployment Scenario – State and Local DOT Fleets
13	Research Questions What are the benefits and costs of alternative deployment scenarios? What are the costs for cellular data to support applications? Which of the applications’ require RSEs and how many, where, by when? Are the deployment scenarios technically feasible end-to-end? What is the feasibility of sending BSMs over cellular? What is the market feasibility of the deployment scenarios? What are the institutional models for vehicular data aggregation and information delivery? What are the fault tolerances for event detection (based on vehicular data) versus information delivery to vehicles? Can we have BSMs stored on-board the vehicle to support applications that don’t require immediate transmission? What are the business models for OEMs to provide probe data?