HOV

High Occupancy Vehicle (HOV) a motor vehicle with seating for several passengers, especially one that is carrying carpoolers.

HEV

Hybrid Electric Vehicle (HEV) is a type of hybrid vehicle and electric vehicle that combines a conventional internal combustion engine (ICE) system with an electric propulsion system (hybrid vehicle drivetrain).

HAP

Hazardous Air Pollutants (HAP) are those known to cause cancer and other serious health impacts.

GIS

Geographical Information System (GIS) is a computer system for capturing, storing, checking, and displaying data related to positions on Earth’s surface.

FTP

Federal Test Procedure (FTP) are a series of tests defined by the US Environmental Protection Agency (EPA) to measure tailpipe emissions and fuel economy of passenger cars (excluding light trucks and heavy-duty vehicles).

FR

Federal Register (FR) is the official journal of the federal government of the United States that contains government agency rules, proposed rules, and public notices.