System Documentation for Onroad Heavy-Duty Vehicles in the Engines and Vehicles Compliance Information System (EV-CIS)

Use the following files for the commercial trucks and buses module in EV-CIS.

• Data Requirements for Heavy-Duty Vehicles (xlsx) (888.4 KB, August 2026)
  Contain descriptions (glossary) of each element and how it is to be used.
• Business Rules for Heavy-Duty Vehicles (xlsx) (53.44 KB, August 2026)
  Define or constrain acceptance of information based on our regulatory implementation and allow for the validation of new submissions with existing system information.
• XML Schema for Heavy-Duty Vehicles (zip)  (August 2026)
  Validates the formats of the data input into the system.
• XML Schema Change Log for Heavy-Duty Vehicles (pdf) (207.71 KB, August 2026)

Use the following link to find presentations about the commercial trucks and buses module in the Engines and Vehicles Compliance Information System.

• Presentations about Heavy-Duty Engine and Vehicle Modules in EV-CIS, formerly Verify