All-terrain vehicle

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**History and Evolution of ATVs:**
– The first powered four-wheeler resembling a modern ATV-style quad bike was built and sold by Royal Enfield in 1893.
– The term ‘ATV’ initially referred to non-straddle ridden, typically six-wheeled, amphibious vehicles in the mid-1960s.
– Honda introduced the first sit-on straddle-ridden three-wheeled ATV in 1969, known as the US90.
– By the 1980s, Honda had a monopoly in the ATV market due to effective patents on design and engine placement.
– Manufacturers like Yamaha, Kawasaki, American Specialty, and Polaris also made significant contributions to the ATV industry.

**Types and Varieties of ATVs:**
– ATVs are intended for use by a single operator, with some tandem models available for a driver and one passenger.
– UTVs are multiple-user analogues with side-by-side seating and similar powertrain parts to ATVs.
– Six or eight-wheeled models exist for specialized applications, with engine sizes ranging from 49 to 1,000cc in the United States.
– Street-legal ATVs are available in some countries but are restricted in most states, territories, and provinces of Australia, the United States, and Canada.
– The industry offers a range of ATV types catering to different needs, including utility, sport, and specialized models.

**Usage and Applications of ATVs:**
– ATVs are extensively used in agriculture due to their speed and light footprint.
– They are designed to handle a wider variety of terrains than most vehicles, providing stability at slower speeds.
– ATVs have gained popularity among hunters in the US and Canada for their ability to navigate challenging terrains.
– Manufacturers diversified their offerings to compete, leading to rapid development in the ATV market.
– The industry is divided into sport and utility markets, each serving different terrain and usage requirements.

**Safety, Regulations, and Industry Impact:**
– Safety helmets are mandatory in some areas to protect riders in case of accidents.
– Safety courses and educational materials have reduced accidents and severity among ATV riders.
– Major manufacturers introduced high-performance models in response to market demands.
– Bans on three-wheelers led to a rise in four-wheel ATV sales and the popularity of utility models.
– The industry is regulated by safety standards, with a focus on improving rider safety and reducing accidents.

**Environmental Impact and Special Restrictions:**
– ATVs accounted for a significant portion of spark ignited recreational vehicles in the US.
– Efforts have been made to reduce emissions from ATVs through EPA regulations.
– ATV use can cause environmental damage, leading to restrictions on off-road motorized travel in sensitive areas.
– Some countries like Germany have specific requirements for street legality and registration of ATVs.
– Helmets, hazard triangles, and first-aid kits are mandatory equipment for ATV owners in certain regions.

An all-terrain vehicle (ATV), also known as a light utility vehicle (LUV), a quad bike or quad (if having four wheels), as defined by the American National Standards Institute (ANSI), is a vehicle that travels on low-pressure tires, has a seat that is straddled by the operator, and has handlebars. As the name implies, it is designed to handle a wider variety of terrain than most other vehicles. It is street-legal in some countries, but not in most states, territories and provinces of Australia, the United States, and Canada.

The ATV is commonly called a four-wheeler in Australia, South Africa, parts of Canada, India, and the United States. They are used extensively in agriculture, because of their speed and light footprint.

By the current ANSI definition, ATVs are intended for use by a single operator, but some ATVs, referred to as tandem ATVs, have been developed for use by the driver and one passenger.

The rider sits on and operates these vehicles like a motorcycle, but the extra wheels give more stability at slower speeds. Although most are equipped with three or four wheels, six or eight wheel (tracked) models exist and existed historically for specialized applications. Multiple-user analogues with side-by-side seating are called utility terrain vehicles (UTVs) or side-by-sides to distinguish the classes of vehicle. Both classes tend to have similar powertrain parts. Engine sizes of ATVs for sale in the United States as of 2008 ranged from 49 to 1,000 cc (3.0 to 61 cu in).

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