VECI Acronym Definitions

• ALVW-Adjusted Loaded Vehicle Weight, (Curb Weight + GVWR)/2.
• Averaging Bank/Trade-Used for Nox Credits on Heavy Duty Trucks Only.
• BBL-Barrel.
• CALIFORNIA ARB-California Air Resource Board.
• CARB-California Air Resource Board.
• CARB LEV-Low Emission Vehicle.
• CARB TLEV-Transitional Low Emission Vehicle.
• CARB ULEV-Ultra Low Emission Vehicle.
• CARB ZEV-Zero Emission Vehicle.
• CPI-Central Port Injection.
• CI-Cylinder Injection.
• CNG-Compressed Natural Gas.
• EPA-Environmental.
• EVAP-Evaporative Emissions.
• GVW-Gross Vehicle Weight.
• GVWR-Gross Vehicle Weight Rating, Curb weight plus payload.
• HHDE-Heavy Heavy Duty Engine.
• HHDDE-Heavy Heavy Duty Diesel Engine.
• MHDE-Medium Heavy Duty Diesel Engine.
• MPI-Multi Port Injection.
• 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.
• MDV-Medium Duty Vehicle.
• MHDE-Medium Heavy Duty Engine.
• MY-Model Year.
• NCP-Non Compliance Penalty.
• OBD-On-Board Diagnostic.
• ORVR-On-Board Refueling Vapor Recovery.
• PC-Passenger Car.
• SI-Sequential Injection.
• SULEV-Super Ultra Low Emission Vehicle.
• 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.
• TBI-Throttle Body Injection.
• LEV-Low Emission Vehicle.
• ZEV-Zero Emission Vehicle.
• ULEV-Ultra Low Emission Vehicle.
• ILEV-Inherently Low Emission Vehicle.