Page Comparison

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.