Acronym Definitions

ELVER Adjusted Loaded Vehicle Weight, (Curb Weight + GVWR) /2.
CALIFORNIA ARB California Air Resource Board.
LEV Low Emission Vehicle.
TLEV Transitional Low Emission Vehicle.
ULEV Ultra Low Emission Vehicle.
ZEV Zero Emission Vehicle.
CI Cylinder Injection.
GVWR Gross Vehicle Weight Rating, Curb weight plus payload
HHDDE Heavy Heavy Duty Diesel Engine.
MHDE Medium Heavy Duty Diesel Engine.
LDDT Light Duty Diesel Truck categories.
LDT Light Duty Truck (gasoline) categories based on weight as defined in the table.
LDV Light Duty Vehicle, generally passenger cars and light trucks under 6000 pounds GVWR.
LHDE Light Heavy Duty Engine (several weight categories).
LVW Loaded Vehicle Weight, curb weight plus 300 pounds.
MDT Medium Duty Truck categories based on weight as defined in the table.
MHDE Medium Heavy Duty Engine.
PC Passenger Car.
SFI Sequential Multiport Fuel Injection.
Tier 0 California and Federal regulations effective prior to Tier 1 phase in dates.
Tier 1 California regulations beginning in 1993 model year and Federal regulations beginning in 1994 model year.