CARB Truck and Bus rule requirements:
Pre-1994 engines: No requirements until 2015, then 2010 engine
1994-1995: No requirements until 2016, then 2010 engine
1996-1999: DPF from 2012 to 2020, then 2010 engine
2000-2004: DPF from 2013 to 2021, then 2010 engine
2005-2006: PM filter from 2014 to 2022, then 2010 engine
2007-2009: No requirements until 2023, then 2010 engine
2010: Meets final requirements
DPF = Diesel Particulate Filter
(Find a list of verified Tier I, II and III DPFs on CARB’s website here.)
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