Definitions for "Mobile sources"
Sources of air pollution that move, such as automobiles, boats, trains, and aircraft.
Moving objects that release pollution from combustion of fossil fuels, such as cars, trucks, buses, planes, trains, lawn mowers, construction equipment, and snowmobiles. Some mobile sources, such as some construction equipment or movable diesel generators, are called nonroad sources, because they are usually operated off road.
A source of air pollution which can move from place to place. In NATA, mobile sources are separated into on-road sources (cars, trucks, buses, motorcycles) and non-road sources (airplanes, trains, construction equipment, lawnmowers, boats, dirt bikes, etc.).