Large Vehicle BACT by Model Year Based on Regulation Adopted on April 25, 2014

Vehicles with GVWRs More than 26,000 lbs

There are two core requirements for larger vehicles:


The compliance schedule when trucks must meet PM BACT is given below.

Date Truck
Must Have
Model Year
Jan 1, 2012 1996-1999
Jan 1, 2013 2000-2004
Jan 1, 2014 2005-2006
NA Pre-1996 There are no PM BACT requirements
applicable to trucks with 1995 and older
model year engines. However, trucks
retrofit by 1/1/2014 are not subject to
replacement until 2023. See table below.

2010 Engine Standards

The trucks must then meet 2010 engine standards. The compliance schedule for larger trucks is given below.

Engine Model Year Date Truck Must Meet 2010 Engine Standard Date Truck Must Meet 2010
Engine Standard if Compliant
with PM BACT by 1/1/2014
Pre 1994 Jan 1, 2015 Jan 1, 2023
1994-1995 Jan 1, 2016 Jan 1, 2023
Pre 2000 Jan 1, 2020 Jan 1, 2023
2000-2004 Jan 1, 2021 Jan 1, 2023
2005-2006 Jan 1, 2022 Jan 1, 2023
2007-2009 Jan 1, 2023 NA

Limit On Trucks that Must Meet 2010 Engine Standards Per Year

Rule text seems to suggest that there is a limit on the trucks that must meet 2010 engine standards per year: 25% of all heavier trucks or two trucks, whichever is larger. This is new provision was adopted April 25, 2014 and is confusing.


ARB needs to release an FAQ on the new annual limit on the number of truck that must be compliant with 2010 engine standards. I would recommend you periodically check ARB FAQ site at:
Truck and Bus Regulation Fact Sheets and Reporting Documents