A motorcycle, often called a motorbike, bike, cycle, or trike is a two- or three-wheeled motor vehicle. Motorcycle design varies greatly to suit a range of different purposes: long-distance travel, commuting, cruising, sport, and off-road riding. Motorcycling is riding a motorcycle and being involved in other related social activities such as joining a motorcycle club and attending motorcycle rallies. The 1885 Daimler Reitwagen made by Gottlieb Daimler and Wilhelm Maybach in Germany was the first internal combustion, petroleum-fueled motorcycle. In 1894, Hildebrand & Wolfmรผller became the first series production motorcycle. Globally, motorcycles are comparably popular with cars as a method of transport. In 2021, approximately 58.6 million new motorcycles were sold around the world, fewer than the 66.7 million cars sold over the same period.
In 2014, the three top motorcycle producers globally by volume were Honda, Yamaha, and Hero MotoCorp. In developing countries, motorcycles are considered utilitarian due to lower prices and greater fuel economy. Of all the motorcycles in the world, 58% are in the Asia-Pacific and Southern and Eastern Asia regions, excluding car-centric Japan. According to the US Department of Transportation, the number of fatalities per vehicle mile traveled was 37 times higher for motorcycles than for cars. Types The term motorcycle has different legal definitions depending on the jurisdiction. There are three major types of motorcycles: street, off-road, and dual purpose. Within these types, there are many sub-types of motorcycles for different purposes. There is often a racing counterpart to each type, such as road racing and street bikes, or motocross including dirt bikes. Street bikes include cruisers, sportbikes, scooters and mopeds, and many other types. Off-road motorcycles include many types designed for dirt-oriented racing classes such as motocross and are not street-legal in most areas.
Dual-purpose machines like the dual-sport style are made to go off-road but include features to make them legal and comfortable on the street as well. Each configuration offers either specialized advantage or broad capability, and each design creates a different riding posture. In some countries, the use of pillions is restricted. History Experimentation and invention The first internal combustion, petroleum-fueled motorcycle was the Daimler Reitwagen. It was designed and built by the German inventors Gottlieb Daimler and Wilhelm Maybach in Bad Cannstatt, Germany, in 1885. This vehicle was unlike either the safety bicycles or the boneshaker bicycles of the era in that it had zero degrees of steering axis angle and no fork offset, and thus did not use the principles of bicycle and motorcycle dynamics developed nearly 70 years earlier. Instead, it relied on two outrigger wheels to remain upright while turning. The inventors called their invention the Reitwagen. It was designed as an expedient testbed for their new engine, rather than a true prototype vehicle. The first commercial design for a self-propelled cycle was a three-wheel design called the Butler Petrol Cycle, conceived of Edward Butler in England in 1884. He exhibited his plans for the vehicle at the Stanley Cycle Show in London in 1884.
The vehicle was built by the Merryweather Fire Engine company in Greenwich, in 1888. The Butler Petrol Cycle was a three-wheeled vehicle, with the rear wheel directly driven by a displacement, bore × stroke, flat twin four-stroke engine equipped with rotary valves and a float-fed carburetor and Ackermann steering, all of which were state of the art at the time. Starting was by compressed air. The engine was liquid-cooled, with a radiator over the rear driving wheel. Speed was controlled by means of a throttle valve lever. No braking system was fitted; the vehicle was stopped by raising and lowering the rear driving wheel using a foot-operated lever; the weight of the machine was then borne by two small castor wheels. The driver was seated between the front wheels. It wasn't, however, a success, as Butler failed to find sufficient financial backing. Many authorities have excluded steam-powered, electric motorcycles or diesel-powered two-wheelers from the definition of a 'motorcycle', and credit the Daimler Reitwagen as the world's first motorcycle. Given the rapid rise in the use of electric motorcycles worldwide, defining only internal-combustion-powered two-wheelers as 'motorcycles' is increasingly problematic.
The first internal-combustion motorcycles, like the German Reitwagen, were, however, also the first practical motorcycles. If a two-wheeled vehicle with steam propulsion is considered a motorcycle, then the first motorcycles built seem to be the French Michaux-Perreaux steam velocipede whose patent application was filled in December 1868, constructed around the same time as the American Roper steam velocipede, built by Sylvester H. Roper Roxbury, Massachusetts. who demonstrated his machine at fairs and circuses in the eastern U.S. in 1867, Excelsior Motor Company, originally a bicycle manufacturing company based in Coventry, England, began production of their first motorcycle model in 1896. The first production motorcycle in the US was the Orient-Aster, built by Charles Metz in 1898 at his factory in Waltham, Massachusetts. In the early period of motorcycle history, many producers of bicycles adapted their designs to accommodate the new internal combustion engine. As the engines became more powerful and designs outgrew the bicycle origins, the number of motorcycle producers increased. Many of the nineteenth-century inventors who worked on early motorcycles often moved on to other inventions. Daimler and Roper, for example, both went on to develop automobiles. At the end of the 19th century, the first major mass-production firms were set up.
In 1898, Triumph Motorcycles in England began producing motorbikes, and by 1903 it was producing over 500 bikes. Other British firms were Royal Enfield, Norton, Douglas Motorcycles, and Birmingham Small Arms Company which began motorbike production in 1899, 1902, 1907, and 1910, respectively. Indian began production in 1901 and Harley-Davidson was established two years later. By the outbreak of World War I, the largest motorcycle manufacturer in the world was Indian, producing over 20,000 bikes per year. First World War During the First World War, motorbike production was greatly ramped up for the war effort to supply effective communications with front-line troops. Messengers on horses were replaced with despatch riders on motorcycles carrying messages, performing reconnaissance, and acting as military police. The American company Harley-Davidson was devoting over 50% of its factory output toward military contracts by the end of the war.
The British company Triumph Motorcycles sold more than 30,000 of its Triumph Type H model to allied forces during the war. With the rear wheel driven by a belt, the Model H was fitted with an air-cooled four-stroke single-cylinder engine. It was also the first Triumph without pedals. The Model H in particular is regarded by many as having been the first "modern motorcycle". Introduced in 1915 it had a 550 cc side-valve four-stroke engine with a three-speed gearbox and belt transmission. It was so popular with its users that it was nicknamed the "Trusty Triumph". Postwar By 1920, Harley-Davidson was the largest manufacturer, with its motorcycles being sold by dealers in 67 countries. Amongst many British motorcycle manufacturers, Chater-Lea with its twin-cylinder models followed by its large singles in the 1920s stood out. Initially, using converted a Woodman-designed ohv Blackburne engine it became the first 350 ccs to exceed 100 mph, recording 100.81 mph over the flying kilometer during April 1924. Later, Chater-Lea set a world record for the flying kilometer for 350 cc and 500 cc motorcycles at 102.9 mph for the firm. Chater-Lea produced variants of these world-beating sports models and became popular among racers at the Isle of Man TT.
Today, the firm is probably best remembered for its long-term contract to manufacture and supply AA Patrol motorcycles and sidecars. By the late 1920s or early 1930s, DKW in Germany took over as the largest manufacturer. In the 1950s, streamlining began to play an increasing part in the development of racing motorcycles, and the "dustbin fairing" held out the possibility of radical changes to motorcycle design. NSU and Moto Guzzi were in the vanguard of this development, both producing very radical designs well ahead of their time. NSU produced the most advanced design, but after the deaths of four NSU riders in the 1954–1956 seasons, they abandoned further development and quit Grand Prix motorcycle racing. Moto Guzzi produced competitive race machines, and until the end of 1957 had a succession of victories. The following year, 1958, full enclosure fairings were banned from racing by the FIM in light of safety concerns. From the 1960s through the 1990s, small two-stroke motorcycles were popular worldwide, partly as a result of East German MZs Walter Kaaden's engine work in the 1950s.
Today In the 21st century, the motorcycle industry is mainly dominated by Indian and Japanese motorcycle companies. In addition to the large capacity motorcycles, there is a large market in smaller capacity motorcycles, mostly concentrated in Asian and African countries and produced in China and India. A Japanese example is the 1958 Honda Super Cub, which went on to become the biggest-selling vehicle of all time, with its 60 millionth unit produced in April 2008. Today, this area is dominated by mostly Indian companies with Hero MotoCorp emerging as the world's largest manufacturer of two-wheelers. Its Splendor model has sold more than 8.5 million to date. Other major producers are Bajaj and TVS Motors. Technical aspects Construction Motorcycle construction is the engineering, manufacturing, and assembly of components and systems for a motorcycle which results in the performance, cost, and aesthetics desired by the designer. With some exceptions, the construction of modern mass-produced motorcycles has standardized on a steel or aluminum frame, telescopic forks holding the front wheel, and disc brakes. Some other body parts, designed for either aesthetic or performance reasons may be added. A petrol-powered engine typically consisting of between one and four cylinders coupled to a manual five- or six-speed sequential transmission drives the swingarm-mounted rear wheel by a chain, driveshaft, or belt. The repair can be done using a Motorcycle lift.
Fuel economy Motorcycle fuel economy varies greatly with engine displacement and riding style. A streamlined, fully faired Matzu Matsuzawa Honda XL125 was achieved in the Craig Vetter Fuel Economy Challenge "on real highways – in real conditions". Due to low engine displacements, and high power-to-mass ratios, motorcycles offer good fuel economy. Under conditions of fuel scarcity like in 1950s Britain and modern developing nations, motorcycles claim large shares of the vehicle market. In the United States, the average motorcycle fuel economy is 44 miles per US gallon. Electric motorcycles Very high fuel economy equivalents are often derived from electric motorcycles. Electric motorcycles are nearly silent, zero-emission electric motor-driven vehicles. Operating range and top speed are limited by battery technology. Fuel cells and petroleum-electric hybrids are also under development to extend the range and improve the performance of the electric drive system. Reliability A 2013 survey of 4,424 readers of the US Consumer Reports magazine collected reliability data on 4,680 motorcycles purchased new from 2009 to 2012. With such a short wheelbase, motorcycles can generate enough torque at the rear wheel, and enough stopping force at the front wheel, to lift the opposite wheel off the road. These actions, if performed on purpose, are known as wheelies and stoppies respectively. Accessories Various features and accessories may be attached to a motorcycle either as OEM or aftermarket. Such accessories are selected by the owner to enhance the motorcycle's appearance, safety, performance, or comfort, and may include anything from mobile electronics to sidecars and trailers. Records The world record for the longest motorcycle jump was set in 2008 by Robbie Maddison.
Since late 2010, the Ack Attack team has held the motorcycle land-speed record at 376.36 mph. Safety Motorcycles have a higher rate of fatal accidents than automobiles or trucks and buses. United States Department of Transportation data for 2005 from the Fatality Analysis Reporting System show that for passenger cars, 18.62 fatal crashes occur per 100,000 registered vehicles. For motorcycles, this figure is higher at 75.19 per 100,000 registered vehicles – four times higher than for cars. The same data shows that 1.56 fatalities occur per 100 million vehicle miles traveled for passenger cars, whereas for motorcycles the figure is 43.47 which is 28 times higher than for cars. This is sometimes called an acronym formed from the motorists' common response of "Sorry mate, I didn't see you". Motorcyclists can anticipate and avoid some of these crashes with proper training, increasing their visibility to other traffic, keeping to the speed limits, and not consuming alcohol or other drugs before riding. The United Kingdom has several organizations dedicated to improving motorcycle safety by providing advanced rider training beyond what is necessary to pass the basic motorcycle license test. These include the Institute of Advanced Motorists and the Royal Society for the Prevention of Accidents. Along with increased personal safety, riders with these advanced qualifications may benefit from reduced insurance costs
In South Africa, the Think Bike campaign is dedicated to increasing both motorcycle safety and the awareness of motorcycles on the country's roads. The campaign, while strongest in the Gauteng province, has representation in Western Cape, KwaZulu Natal, and the Free State. It has dozens of trained marshals available for various events such as cycle races and is deeply involved in numerous other projects such as the annual Motorcycle Toy Run. Motorcycle safety education is offered throughout the United States by organizations ranging from state agencies to non-profit organizations to corporations. Most states use the courses designed by the Motorcycle Safety Foundation, while Oregon and Idaho developed their own. All of the training programs include a Basic Rider Course, an Intermediate Rider Course, and an Advanced Rider Course. In Ireland, since 2010, in the UK and some Australian jurisdictions, such as Victoria, New South Wales, the Australian Capital Territory, Tasmania, and the Northern Territory, it is compulsory to complete a basic rider training course before being issued a Learners Licence, after which they can ride on public roads.
In Canada, motorcycle rider training is compulsory in Quebec and Manitoba only, but all provinces and territories have graduated license programs that place restrictions on new drivers until they have gained experience. Eligibility for a full motorcycle license or endorsement for completing a Motorcycle Safety course varies by province. Without the Motorcycle Safety Course, the chance of getting insurance for the motorcycle is very low. The Canada Safety Council, a non-profit safety organization, offers the Gearing Up program across Canada and is endorsed by the Motorcycle and Moped Industry Council. Training course graduates may qualify for reduced insurance premiums. Motorcycle rider postures The motorcyclist's riding position depends on the rider's body geometry combined with the geometry of the motorcycle itself. These factors create a set of three basic postures. Sport – the rider leans forward into the wind and the weight of the upper torso is supported by the rider's core at low speed and air pressure at high speed. The footpegs are below the rider or to the rear. The reduced frontal area cuts wind resistance and allows higher speeds. At low speeds in this position, the rider's arms may bear some of the weight of the rider's torso, which can be problematic. Standard – the rider sits upright or leans forward slightly. The feet are below the rider. These are motorcycles that are not specialized to one task, so they do not excel in any particular area. The standard posture is used with touring and commuting as well as dirt and dual-sport bikes and may offer advantages for beginners. Cruiser – the rider sits at a lower seat height with the upper torso upright or leaning slightly rearward. Legs are extended forwards, sometimes out of reach of the regular controls on cruiser pegs. The low seat height can be a consideration for new or short riders. Handlebars tend to be high and wide. The emphasis is on comfort while compromising cornering ability because of low ground clearance and the greater likelihood of scraping foot pegs, floor boards, or other parts if turns are taken at the speeds other motorcycles can more readily accomplish. Factors of a motorcycle's ergonomic geometry that determine the seating posture include the height, angle, and location of footpegs, seats, and handlebars. Factors in a rider's physical geometry that contribute to seating posture include torso, arm, thigh, and leg length, and overall rider height. Legal definitions and restrictions A motorcycle is broadly defined by law in most countries for the purposes of registration, taxation, and rider licensing as a powered two-wheel motor vehicle. Most countries distinguish between mopeds of 49 cc and the more powerful, larger vehicles. Many jurisdictions include some forms of three-wheeled cars such as motorcycles.
In Nigeria, motorcycles, popularly referred to as Okada has been the subject of many controversies with regard to safety and security followed by restrictions of movement in many states. Recently, it was banned in Lagos - Nigeria's most populous city. Environmental impact Motorcycles and scooters' low fuel consumption has attracted interest in the United States from environmentalists and those affected by increased fuel prices. Piaggio Group Americas supported this interest with the launch of a "Vespanomics" website and platform, claiming lower per-mile carbon emissions of 0.4 lb/mile less than the average car, a 65% reduction, and better fuel economy. However, a motorcycle's exhaust emissions may contain 10–20 times more oxides of nitrogen, carbon monoxide, and unburned hydrocarbons than exhaust from a similar-year passenger car or SUV. This is because many motorcycles lack a catalytic converter, and the emission standard is much more permissive for motorcycles than for other vehicles. the average certified emissions level for 12,327 vehicles tested was 0.734. The average "Nox+Co End-Of-Useful-Life-Emissions" for 3,863 motorcycles tested was 0.8531. 54% of the tested 2007-model motorcycles were equipped with a catalytic converter. United States emissions limit The following table shows the maximum acceptable legal emissions of the combination of hydrocarbons, oxides of nitrogen, and carbon monoxide for new motorcycles sold in the United States with 280 ccs or greater piston displacement. The maximum acceptable legal emissions of hydrocarbon and carbon monoxide for new Class I and II motorcycles sold in the United States are as follows: New motorcycles must meet Euro 5 standards, while cars must meet Euro 6D-temp standards. Motorcycle emission controls are being updated and it has been proposed to update to Euro 5+ in 2024.
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