All requests can be sent to CAVSupportServices@dot.gov along with an contact name and address.

All loans are made in one-month increments. Loans are extended toward the end of the month when requested.

All equipment is listed on the Equipment Loan Program page.

Requests are fulfilled as they arrive. As we have a limited inventory, not all equipment may be available.

See Figure 1 in the Appendix below for an example network diagram and communication flow

All OBUs will automatically transmit BSMs once a GPS fix is verified. Ensure the equipment has GPS signal by following the respective instructions below.

When login access to the device is available, GPS signal can be checked with: gpspipe -w

When login access to the device is available, GPS signal can be checked with: kinematic-sample-client -a

• Log locations vary by vendor. A location is indicated at the Appendix section of equipment documentation.

• Please reach out to CAVSupportServices@dot.gov to request decoding scripts.

• This is possible, with some processing and communication latency. Real-time decoding scripts are available from CAVSupportServices@dot.gov.

The validity of a received SPaT message or any other J2735 message can be quickly checked online by pasting the payload to the Marben ASN.1 Messages Decoder website and selecting the Message Frame option.

The J2735 Message Set Dictionary contains all the required and optional fields that are included in each message. The dictionary may be acquired from:

• J2735E: V2X Communications Message Set Dictionary - SAE International

Only certain OBUs are capable of enriching BSMs with CAN data. Please reach out to CAVSupportServices@dot.gov to find out if your OBU is able to do so.

All available information on CAVe-in-a-Box and other CAV education resources can be found at the ITS JPO PCB website:
https://www.pcb.its.dot.gov/CAVEducation.aspx

NTCIP 1202 information can be found in the v2 (published 2005) and v3 (published 2019) documents, found in the NTCIP documents webpage:
https://www.ntcip.org/document-numbers-and-status/

Information on Releases from 3GPP can be found in their releases page:
https://www.3gpp.org/specifications-technologies/releases

A newline character might be present in your mysql passwords. Best fix for this it to edit both files using a code editor like VS Code to remove any spaces or newlines. Additional installation instructions can be found here:
https://usdot-carma.atlassian.net/wiki/spaces/V2XH/pages/1886158849/V2X-Hub+Docker+Deployment

Yes, a Plugin Programming Guide exists here:

https://usdot-carma.atlassian.net/wiki/spaces/V2XH/pages/1508311057/V2X+Hub+Project+Documentation
Additionally, the CAV Support Services can assist with better understanding the functionality of existing plugins and how they can be changed. Please reach out to CAVSupportServices@dot.gov