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In 2007 the Air Resources Board then adopted a State Implementation Plan (SIP) which requires heavy-duty in-use diesel trucks operating in the South Coast and San Joaquin Valley to be retrofitted to meet model year 2007 emission levels by 2014 and 2017, respectively.
more than 2 model years old to 24 model years old; motorcycles, diesel-powered, and automobiles 25 model years or older exempt from emission testing – includes motor vehicles registered as an Antique or Classic under Texas law (either displaying state-mandated vanity license plate or vintage-era license plates (this also includes past general ...
The eight-year exception does not apply to nonresident (previously registered out-of-state) vehicles being registered in California for the first time, diesel vehicles 1998 model or newer and weighing 14,000 lbs or less, [2] [3] or specially constructed vehicles 1976 and newer. [3]
California vehicles with 2.5, 2.8 and 3.5 liter engines will have a CLCC system. In 1980 model year, vehicles sold in California and 3.8 and 4.3 liter engines sold federally will have CLCC, and finally in the 1981 model year all passenger cars will have the system. California light and medium duty trucks may also use the c-4 system.
During his first administration, Trump attempted to thwart various California climate efforts, including rules to cut down on greenhouse gas emissions from transportation sources. One of the rules California pulled after the EPA failed to approve it would have phased out the sale of new diesel-powered semi-trucks and buses by 2036. The Air ...
State regulators are facing backlash for a proposed regulation to phase out the sale of new diesel trucks by 2040. A future without diesel big rigs? California air board writing new clean-truck rules
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The program covered model year 2012 to model year 2016 and ultimately required an average fuel economy standard of 35.5 miles per US gallon (6.63 L/100 km; 42.6 mpg ‑imp) in 2016 (of 39 miles per gallon for cars and 30 mpg for trucks), a jump from the 2009 average for all vehicles of 25 miles per gallon. Obama said, "The status quo is no ...