WYDOT is conducting operations in-house and ICF is providing project management support.
WYDOT uses both non-invasive and in-pavement sensors.
Both. It is based on the geofenced areas. If there are roadside units in the area, the messages would use DSRC. If there are not roadside units nearby, the messages would use SiriusXM.
Location-Time Services.
The system’s each have their limitations but complement each other well. SiriusXM is not being used for real-time communications (since there is a 5 minute lag), while DSRC has geographical limitations (~300m).
There are actually three configurations of HSMs: one at the TMC, one on every OBU and one on every RSU.
Yes – there is a connection that a 3rd party such as Waze can connect with.
We are using Infineon chip HSMs on the OBUs and RSUs that are FIPS-140-2 Level 3 certified.
They can run together.
The format depends on the message type. The Interface Control Document shows all the fields Wyoming is collecting data on.
You could not go out and buy a device today and have it be interoperable – that is still a few years away.
The SiriusXM OBUs are using Power over Ethernet antennas from Sirius XM. The Lear devices are using 2 different antennae sets: a “shark fin” model and a pole antenna.
It will be a production environment, so anyone with connected vehicle equipment that drives through the corridor could be able to communicate. However, “testing” in the production environment is discouraged as it could interfere with the impact assessment.
We verified that they can send/receive BSMs through a FCW scenario and TIMs through a Distress Notification scenario.
A lot of network devices do not support IPv6. Some devices were able to update their firmware, but many others had to buy new hardware.
Some of the procurements were sole-source and some were extensions of existing contracts WYDOT already had with partners. WYDOT did not do any RFPs; however, the NYC Pilot did do an RFP for their devices. See NYC’s RFEI here: http://www.nyc.gov/html/dot/downloads/pdf/nycdot-cvp-rfei-apr2017.pdf
Depends on the application. Some are housed at the TMC, while others are housed on the OBUs.
TIM is the other message type used in the Pilot.
We are using horizontally polarized omnidirectional antennas.
We are not doing real time updates to GPS (no RTCM or augmentation). Accuracy is at lane-level or better for lat/long (typically 1.5 meters).
To prevent the havoc that a hacker could cause, only two weeks of certificates can be loaded at a time.
We are using unknown fields from J2735.
To date we have only received messages from Pilot vehicles, this may change in the future though.
BSM Part 1 includes the vehicle length, width, height, power.
BSM Part 2 includes the pivot points for trailers.
The routers are in a climate controlled enclosure with heaters.