Acronyms and Terms

Acronyms and Terms#

ACC II#: Advanced Clean Cars II: A regulation adopted by CARB in 2022 to reduce emissions from new light-duty vehicles.
ACF#: Advanced Clean Fleets: A regulation by CARB to propel the use of zero-emission medium- and heavy-duty trucks through establishing fleet purchase requirements. See Section 9.2.
BEV#: Battery-Electric Vehicle: A vehicle that is powered entirely by an electric battery and produces no tailpipe emissions.
CARB#: California Air Resources Board
CDTFA#: California Department of Tax and Fee Administration
COVID-19#: Coronavirus Disease 2019: A global pandemic that affected various sectors, including transportation and emissions.
CTC#: Clean Truck Check: A comprehensive heavy-duty vehicle inspection and maintenance (HD I/M) regulation to ensure that vehicles’ emissions control systems are properly functioning when traveling on California’s roadways. See Section 9.1.
cVMT#: Combustion Vehicle Miles Traveled: Miles driven by a conventional internal combustion engine vehicle or by using the internal combustion engine in a plug-in hybrid electric vehicle.
DOF#: California Department of Finance
DMV#: California Department of Motor Vehicles
eVMT#: Electric Vehicle Miles Traveled: Miles driven using the battery in a zero-emissions vehicle or plug-in hybrid electric vehicle.
FCEV#: Fuel Cell Electric Vehicle: A vehicle that uses a fuel cell to convert hydrogen into electricity, powering an electric motor and producing only water vapor as a byproduct.
GVWR#: Gross Vehicle Weight Rating: Represents the maximum total safe weight of a vehicle.
IFTA#: International Fuel Tax Agreement: An agreement among U.S. states and Canadian provinces to simplify the reporting of fuel use by motor carriers that operate in more than one jurisdiction.
IRP#: International Registration Plan: A cooperative agreement among the contiguous United States, the District of Columbia, and Canadian provinces designed to facilitate the registration of commercial vehicles that operate across multiple jurisdictions.
MPO#: Metropolitan Planning Organization
MOVES#: MOtor Vehicle Emission Simulator: A model developed by the U.S. Environmental Protection Agency (EPA) to estimate emissions from mobile sources.
NEI#: National Emissions Inventory: A comprehensive inventory of air emissions from all sources in the United States, maintained by the U.S. Environmental Protection Agency (EPA).
NTD#: National Transit Database: A database maintained by the Federal Transit Administration that collects and reports data on public transportation systems in the U.S.
OAL#: California Office of Administrative Law: The California state agency responsible for reviewing and approving regulations proposed by state agencies, including CARB.
PEMS#: Portable Emissions Measurement System: An instrument typically mounted on vehicles to directly measure the emissions produced by vehicles during actual on-road operation, rather than in a laboratory setting.
Phase 3#: Greenhouse Gas Emissions Standards for Heavy-Duty Vehicles – Phase 3: U.S. EPA’s regulation that sets stronger standards to reduce greenhouse gas emissions from heavy-duty (HD) vehicles beginning in model year (MY) 2027.
PHEV#: Plug-in Hybrid Electric Vehicle: A vehicle that can be powered by both an internal combustion engine and an electric battery, which can be recharged by plugging into an external power source.
RVP#: Reid Vapor Pressure: A measure of the volatility of gasoline, indicating how easily it evaporates at a given temperature.
SCR#: Selective Catalytic Reduction: A technology used in diesel engines to reduce nitrogen oxides (NO_x) emissions by injecting a urea-based solution into the exhaust stream.
SCF#: Speed Correction Factor: A factor used to adjust emission rates based on vehicle speed.
SIP#: State Implementation Plan: A plan developed by states to demonstrate how they will achieve and maintain national air quality standards.
SWCV#: Solid Waste Collection Vehicle: A vehicle specifically designed for collecting and transporting solid waste.
UC#: Unified Cycle: A standardized test cycle that simulates real-world vehicle operation in a laboratory by following a specific sequence of driving conditions such as varying speeds, accelerations, and idling.
U.S. EPA#: United States Environmental Protection Agency: The federal agency responsible for regulating air quality and enforcing environmental laws.
VSP#: Vehicle Surveillance Program: A CARB program that collects in-use emissions data from light-duty vehicles to assess real-world emissions performance and update emissions inventories.
ZEV#: Zero-Emissions Vehicle: Vehicles that produce no tailpipe emissions, including battery-electric vehicles (BEV) and fuel cell electric vehicles (FCEV).