Scooter- The Handy Motorcycle for everyone9689161

A scooter is a motorcycle with step-through frame and a platform for the operator's feet. Elements of scooter design have been present in some of the earliest motorcycles, and motorcycles identifiable as scooters have been made from 1914 or earlier. Scooter development continued in Europe and the United States between the World Wars.

The global popularity of scooters  dates from the post-World War II introductions of the Vespa and the Lambretta. These post-war scooters were intended to provide low-power personal transportation (engines from 50 to 250 cc/3.1 to 15 cu in). The original layout is still widely used in this application. Maxi-scooters, with engines from 250 to 850 cc (15 to 52 cu in) have been developed for Western markets.

Scooters are popular for personal transport, partly based on their low cost of purchase and operation and on benefits that include convenience in parking and storage. Licensing requirements for scooters are easier and less expensive than those for cars in most parts of the world, and insurance is generally cheaper.

Description A typical modern scooter

A motor scooter is a motorcycle similar to a kick scooter with a seat, a floorboard, and small or low wheels. The United States Department of Transportation defines a scooter as a motorcycle that has a platform for the operator's feet or has integrated footrests, and has a step-through architecture.

The classic scooter design features a step-through frame and a flat floorboard for the rider's feet. This design is possible because most scooter engines and drive systems are attached to the rear axle or under the seat. Unlike a conventional motorcycle, in which the engine is mounted on the frame, most modern scooters allow the engine to swing with the rear wheel, while most vintage scooters and some newer retro models have an axle-mounted engine. Scooters generally use either a continuously variable transmission (CVT), or a manual transmission with the gearshift and clutch control built into the left handlebar.

Scooters usually feature bodywork, including a front leg shield and body that conceals all or most of the mechanicals. There is often some integral storage space, either under the seat, built into the front leg shield, or both. Scooters have varying engine displacements and configurations ranging from 50 cc single-cylinder to 840 cc twin-cylinder models.

Traditionally, scooter wheels are smaller than conventional motorcycle wheels and are made of pressed steel or cast aluminum alloy, bolt on easily, and often are interchangeable between front and rear. Some scooters carry a spare wheel. Many recent scooters use conventional front forks with the front axle fastened at both ends. Regulatory classification

Most jurisdictions do not differentiate between scooters and motorcycles. For all legal purposes in the United States of America, the National Highway Traffic Safety Administration (NHTSA) recommends using the term motorcycle for all of these vehicles. However, while NHTSA excludes the term motor scooter from legal definition, it proceeds, in the same document, to give detailed instructions on how to import a small motor scooter. Emissions

The emissions of mopeds and scooters have been the subject of multiple studies. Studies have found that two-stroke 50 cc mopeds, with and without catalytic converters, emit ten to thirty times more hydrocarbons and particulate emissions than the outdated Euro 3 automobile standards. In the same study, four-stroke mopeds, with and without catalytic converters, emitted three to eight times the hydrocarbons and particulate emissions than the Euro 3 automobile standards. Approximate parity with automobiles was achieved with NOx emissions in these studies. Emissions performance was tested on a g/km basis and was unaffected by fuel economy. Currently in the United States, the EPA allows motorcycles, scooters, and mopeds with engine displacements less than 280 cc to emit ten times the NOx and six times the CO than the median Tier II bin 5 automobile regulations. An additional air quality challenge can also arise from the use of moped and scooter transportation over automobiles, as a higher density of motorized vehicles can be supported by existing transportation infrastructure.