As of 2020, the California Department of Motor Vehicles (DMV) ensures the compliance of vehicles subject to the California Air Resources Board's (CARB) Truck and Bus Regulation prior to DMV registration.

The Truck and Bus Regulation is currently in effect, and your vehicle

must meet the compliance deadlines. As of 2020, DMV checks

compliance with the regulation in order to register your vehicle

based on the following schedule:

The Truck and Bus Regulation is currently in effect, and your vehicle

must meet the compliance deadlines. As of 2020, DMV checks

compliance with the regulation in order to register your vehicle based

on the following schedule:

Lighter Vehicles (14,001-26,000 lbs GVWR)

Vehicle Model Year

DMV Begins Compliance Verification*

2004 and older

January 1, 2020

Lighter Vehicles (14,001-26,000 lbs GVWR)

Vehicle Model Year

DMV Begins Compliance Verification

2005 - 2007

January 1, 2021

2008 - 2010

January 1, 2023

Heavier Vehicles (>26,000 lbs GVWR)

Vehicle Model Year

DMV Begins Compliance Verification

2000 and older

January 1, 2020

2001 - 2005

January 1, 2021

2006 - 2007

January 1, 2022

2008 - 2010

January 1, 2023