moottoriajoneuvo

A moottoriajoneuvo, or motor vehicle, is a self-propelled vehicle, usually wheeled, that does not run on rails and is used for transporting people or cargo. The term typically encompasses automobiles, motorcycles, trucks, buses, and other similar machines. The power source for a motor vehicle is most commonly an internal combustion engine, but electric motors and other forms of propulsion are also employed, particularly in more recent designs.

The development of the motor vehicle has profoundly impacted society, revolutionizing transportation, enabling greater personal mobility, and fostering economic growth through trade and industry. Early motor vehicles emerged in the late 19th century, with significant advancements occurring throughout the 20th century, leading to mass production and widespread adoption. Safety features, fuel efficiency, and emission controls have been continuous areas of development and regulation.

Motor vehicles are classified in various ways, including by their size, purpose, and type of engine. Common categories include passenger cars, commercial vehicles (such as vans, trucks, and buses), and motorcycles. The operation of motor vehicles is governed by a complex system of laws and regulations, including licensing, traffic rules, and vehicle registration, which vary by jurisdiction. The environmental impact of motor vehicles, particularly concerning air pollution and greenhouse gas emissions, remains a significant global concern, driving innovation in alternative fuels and electric vehicle technology.