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Review of the 21st Century Truck Partnership (2008) / Chapter Skim
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D Vehicle Emission Regulations
Pages 107-111

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From page 107...
... , gave EPA broad responsibility for regulating motor exhaust emissions from light-duty vehicles by the following vehicle pollution, and directed the agency to set health-based amounts: National Ambient Air Quality Standards (EPA, 1994)
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From page 108...
... Fig D-, bitmapped 2 CURRENT AND FUTURE EXHAUST EMISSION California is the only state that has been granted authorSTANDARDS ity, within the original Clean Air Act, to establish separate, stricter standards for vehicle emissions, independent of the The emission standards currently in effect in the United federal government. All other states are required to comply States are promulgated by the U.S.
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From page 109...
... weight and the GVWR; GVWR, gross vehicle weight rating, maximum fully loaded vehicle weight; LVW, loaded vehicle weight, nominal empty vehicle weight + 300 lb; LDT1, light-duty truck 1, up to 6,000 lb GVWR and 3,750 lb LVW; LDT2, light-duty truck 2, up to 6,000 lb GVWR and between 3,751 and 5,750 lb LVW; LDT3, light-duty truck 3, between 6,001 and 8,500 lb GVWR and between 3,751 and 5,750 lb ALVW; LDT4, light-duty truck 4, between 6,001 and 8,500 lb GVWR and over 5,750 lb ALVW; MDPV, medium-duty passenger vehicle, trucks between 8,501 and 10,000 lb GVWR; PC, passenger car. TABLE D-2  Current California LEV II Light-Duty Vehicle Emission Standards GVWR (lb)
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From page 110...
... : 8 yr or 110,000 mi Under federal regulations, between 8,500 and 19,500 lb gross vehicle weight rating (GVWR) ; in California, between 14,000 and 19,500 lb GVWRa Medium heavy-duty diesel engine (MHDDE)
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From page 111...
... exhaust emissions as a partial zero emission vehicle. In recognition of the high temperatures that diesel fuel Defeat Devices can reach in modern common rail fuel systems, evaporative emission standards for diesel fuel vehicles have also been Manufacturers must ensure that vehicle emission control adopted.
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Key Terms

  • vehicle weight
  • passenger car
  • emission vehicle
  • vehicle emission
  • evaporative emission

  • clean air
  • air act
  • exhaust emissions
  • weight rating
  • low emission

  • gross vehicle
  • air resources
  • loaded vehicle
  • passenger cars
  • diesel engine

  • motor vehicles
  • carbon monoxide
  • resources board
  • additional emission
  • emission test

  • federal emission
  • emission testing
  • exhaust emission
  • emission limits
  • emission standard

  • zero emission
  • historical trend
  • california air
  • adjusted load
  • fleet average


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