Answer: The Pilot is using the SCMS which is being integrated into the OBUs, RSUs and the HSM in the TMC. We are using the SCMS bootstrap as well as certificates for signing and validating messages.
Answer: An analysis was done that identified weather/accident hotspots as good locations for some of the RSUs. In some areas of the interstate, the eastbound and westbound directions diverge enough that RSUs were placed for each direction of travel to get adequate coverage. In general, RSUs are between 2 and 20 miles apart and they are broadcasting between 300 and 2000 meters.
Answer: One of our team members who is a professor at University of WY, Mohamad Ahmed, is working with Lear on finding notifications that would be the least distracting for drivers. Mohamad has a full cab truck simulator to test eye movements for distraction from the road.
Answer: We are using Sirius XM for satellite services. These SXM radios are installed in both the Lear and SXM OBU’s.
Answer: The sensors WYDOT is using are specifically for microclimate (temperature, humidity, precipitation, etc.). This pilot is not implementing RADAR/LIDAR for detecting objects in the road.
Answer: At this point, we are looking at a crawl-walk-run. We will be using slow down metrics based on vehicle type for time-to-collision. In the future, we will look at the vehicle gyroscopes and road condition information to determine grade and surface condition to know how much time to give the drivers.
Answer: This was looked into, but in the end, we decided not to incorporate this into the pilot.
Answer: Linear Referencing System is used in the TMC for road layout, but for TIMs for the CVs, we use WGS84 (lat/log) elevation that is GPS-based.
Answer: The OBUs have built-in satellite receivers, so no additional hardware is needed other than OBU and their antennas.
Answer: It is possible to have fake messages sent out but it is not something we are overly concerned about.
Answer: So far, we have 40 RSUs and 10 OBUs already installed (3 in Snow Plows, 1 patrol vehicle, 6 in test vehicles).
Answer: Lear and Sirius XM (the vendors) are each doing their hardware certification with OmniAir and are using the 7Layers testing facility.
Answer: We are using Scums but there are a number of teams working on the development working around the country so each team is working in a slightly different manner.
Answer: Yes, logs are retained for 7 days on OBUs, data could be from inside or outside of WY.
Connected Vehicle Pilot Deployment and Program Evaluation
Phase 3 Operation and Maintenance (June 2019 - August 2022)
Phase 2 Design, Build, and Test (Sep 2016 - December 2020)
Phase 1 Concept Development (Sep 2015 - Sep 2016)
Preliminary Planning Phase (April 2014 - Sep 2015)