Saddlebags or panniers
Saddlebags or panniers mount on either side of the rear wheel behind the saddle to carry parts, tools, and/or travel gear. They can be made of fiberglass, ABS, leather, Cordura, or other appropriate sturdy material. They are normally standard items on touring motorcycles, but are usually optional on other types of motorcycles. They can be model-specific and available from a motorcycle's manufacturer, or after-market and designed to fit on numerous models.

Heated handgrips on a BMW
Heated hand grips/seats
As motorcycles lack climate control or proper protection from the wind, some manufacturers offer heated seats or hand grips to relieve the discomfort of wind chill during night riding or the colder months. They can also be added on as after market accessories and are powered by the bike's battery.
Luggage rack
A common addition to many bikes is an attachment onto which bags or other luggage can be fastened. This removes the need for rider backpacks and is generally a more secure and safe way to add carrying capacity to a motorcycle.
Sidecar
Main article: Sidecar

IMZ-Ural motorcycle with sidecar
A sidecar is a one-wheeled device attached to the side of a motorcycle, producing a three-wheeled vehicle. Early sidecars were intended to be removable devices that could be detached from the motorcycle. Sidecars gradually superseded forecars and trailers. The forecar comprised a two-wheeled attachment attached to the front of the motorcycle; the trailer was just that, leaving the passenger to be hauled along behind the vehicle. In neither case could rider and passenger converse easily – this may be why early sidecars were often called 'sociable' attachments.
Trailer hitch
Main article: Motorcycle trailer
A trailer hitch or tow hitch is a device mounted on a motorcycle that enables it to tow a motorcycle trailer, usually in order to haul additional gear. No motorcycle manufacturer recommends that a trailer be towed by one if its motorcycles because it creates additional safety hazards for motorcyclists.
Trunk
Main article: Trunk (motorcycle)
A motorcycle trunk is a storage compartment in the vicinity of the seat, other than panniers or saddlebags. A trunk mounted above and to the rear of the seat is also called a top box.

[edit] Social aspects
Main article: Motorcycling

[edit] Subcultures

A motorcycle rally in Ontario
Around the world, motorcycles have historically been associated with subcultures. Some of these subcultures have been loose-knit social groups such as the cafe racers of 1950s Britain, and the Mods and Rockers of the 1960s. A few are believed to be criminal gangs.
Social motorcyclist organisations are popular and are sometimes organised geographically, focus on individual makes, or even specific models. Example motorcycle clubs include: American Motorcyclist Association, Harley Owners Group, Gold Wing Road Riders (GWRRA), and BMW MOA.
Many motorcycle organisations raise money for charities through organised events and rides. Some organisations hold large international rallies in different parts of the world that are attended by many thousands of riders.

[edit] Mobility
While the reasons for people choosing to ride motorcycles are many and varied, those reasons are increasingly practical, with riders opting for a powered two-wheeler as a cost-efficient alternative to infrequent and expensive public transport systems, or as a means of avoiding or reducing the effects of urban congestion.[8] In places where it is permitted, lane splitting, also known as filtering, allows motorcycles to use the space between vehicles to continue moving through stationary or slow traffic.[9]
In England, motorcycles are exempt from the £8 per day London congestion charge other vehicles have to pay to enter the city during the day. Motorcycles are also exempt from toll bridge charges at some crossings, such as the Severn Bridge and Dartford Crossing. Some cities, such as Bristol, allow motorcycles to use bus lanes and provide dedicated free parking. In the United States, those states that have high-occupancy vehicle lanes also allow for motorcycle travel in them. Other countries have similar policies.
In many cultures, motorcycles are the primary means of motorised transport. According to the Taiwanese government, for example, "the number of automobiles per ten thousand population is around 2,500, and the number of motorcycles is about 5,000."[10]

[edit] Safety
Main articles: Motorcycle safety and Motorcycle safety clothing
Motorcycles have a far higher rate of crippling and fatal accidents per unit distance than automobiles. According to the U. S. Highway Safety Authority, in 2004 15.0 cars out of 100,000 ended up in fatal crashes while the rate for motorcycles is 69.3 per 100,000 (a ratio of 4.6 to 1). The picture is worse when distance travelled are taken into account: in 2004 in the U.S., there were 0.4 motorcyclist fatalities per million miles compared to 0.012 passenger car occupant fatalities per million miles (a ratio of 33 to 1).
The two major causes of motorcycle accidents in the United States, i.e., (1) motorists pulling out or turning in front of motorcyclists and violating their rights-of-way and (2) motorcyclists running wide in turns and crashing, are made more likely when motorcyclists mix drinking with riding.[11] Motorcyclists can do much to anticipate and avoid these crashes by getting proper training, increasing their conspicuity to other traffic, and separating alcohol and riding.

An MSF rider course for novices
The United Kingdom has a number of organisations which are dedicated to improving motorcycle safety by providing advanced rider training over and above what is necessary to pass the basic motorcycle test. These include the Institute of Advanced Motorists (IAM) and the Royal Society for the Prevention of Accidents (RoSPA). Along with increased personal safety, riders with these advanced qualifications often benefit from reduced insurance costs.
Motorcycle Safety Education is offered throughout the United States by a number of organisations ranging from state agencies to non-profit organisations to corporations. The courses, designed by the Motorcycle Safety Foundation (MSF), include a Basic Rider Course, an Intermediate Rider Course and an Advanced Rider Course.
In some Australian jurisdictions, such as New South Wales,[12] the Australian Capital Territory[13] and the Northern Territory,[14] it is compulsory to undertake a rider training course before being issued a Learners Licence.
In Canada, motorcycle rider training is compulsory in Quebec and Manitoba only, but all provinces and territories have Graduated Licensing programs which place restrictions on new drivers until they have gained more experience. Eligibility for a full motorcycle license or endorsement for completing a Motorcycle Safety course varies from province to province. The Canada Safety Council (CSC), a non-profit safety organisation, offers the Gearing Up program across Canada and is endorsed by the Motorcycle and Moped Industry Council.[15] Again, training course graduates often benefit with reduced insurance premiums.

[edit] Types of motorcycles
Main article: Types of motorcycle
There are three major types of motorcycle, street, off-road, and dual purpose. Within these types, there are many different sub-types of motorcycles for many different purposes.

Harley-Davidson Softail Heritage Classic. A typical "cruiser" design

Modenas Kriss underbone motorcycle.

An Italian 125cc Cagiva Planet.A standard motorbike

A Kawasaki ZX-7RR sport bike

A BMW R1200RT touring bike

A Honda motocross bike

The popular Kawasaki KLR650 dual-purpose motorcycle

[edit] Street
Choppers: Highly customised motorcycles based on a cruiser-style frame with long rake (longer front forks) and wild paint jobs. These are created more for show than ridability.
Cruisers: A range of small to large motorcycles designed for comfort and looks with a relaxed upright seating position. They are notable for their heavy use of chrome and are often highly customised.
Electric motorcycles: Nearly silent, zero-emission electric motor-driven vehicles. Operating range and top speed suffer because of limitations of battery technology. Fuel cells and petroleum-electric hybrids are also under development to extend the range and improve performance of the electric motors.
Mini bikes: Very small bikes designed to be simple runaround fun for both children and adults. Generally they have no hand-operated clutch or gearbox to simplify operation. Also known as Mini Motos. Not street-legal in most countries and jurisdictions. May be used for racing by all age levels.
Mopeds: Small, light, inexpensive, efficient rides for getting around town. Usually started by pedaling (motorcycle + pedals = moped).
Underbones: Small motorcycle which is a crossover between a scooter and a true motorcycle with step-through frame, popular in Southeast Asia. While the fuel tank for most motorcycles are tear-shaped and located at the top and just behind the instrument panel, the fuel tank for an underbone motorcycle is located under the seat.
Naked bikes/Standard/Street bikes: Naked bikes have a riding position midway between the forward position of a sports bike and the reclined position of a cruiser. Unlike touring bikes, naked bikes often have little or no fairing (hence the title). Luggage capabilities are often an optional extra. Naked bikes are popular for commuting and other city riding as the upright riding position gives greater visibility in heavy traffic (both for the rider and to other road users) and are more comfortable than the hunched over sport bikes. Note that naked bike and standard are not fully interchangeable terms. Naked refers to the lack of bodywork and standard refers to the upright riding position.
Scooters: Motorbikes with a step-through frame and generally smaller wheels than those of a traditional motorcycle. Can be ridden without straddling any part of the bike. Available in sport, commuter, and touring models.
Sport bikes: Fast, light, sleek motorcycles designed for maximum performance, for racing or spirited road riding. They are distinguishable by their full fairings and the rider's tipped-forward seating position. They are also called "race replicas" because of their connection to the racing category for production motorcycles known as Superbike racing. The power to weight ratio of the 900 cc+ models typically matches or exceeds one bhp of power for every one kg of mass.
Racing bikes: Motorcycles designed for circuit or road racing, including mass-production motorcycles modified for motorcycle racing or sport riding.
Street customs: Highly customised motorcycles with wild paint jobs also built for show, but constructed from a sport bike frame instead of a cruiser-style frame.
Touring motorcycles: Touring bikes are designed for rider and passenger comfort, luggage carrying capacity, and reliability. Cruisers, sport bikes and some dual-sports can also be used as touring bikes with the addition of aftermarket luggage and seats. Common throughout the touring market are usually large-displacement fairings and windshields (for weather and wind protection), large-capacity fuel tanks (for long-range travel), engines offering lots of torque instead of horsepower, and a more relaxed, basically upright seating position.
Sport touring motorcycles: Sport-tourers are factory-built hybrids of a sport bike and a touring motorcycle. They are built for comfort, while maintaining a forward-leaning riding position.

[edit] Off-road
Motocross bikes: Motorcycles designed for racing over closed circuits, often with jumps, over varied terrain of gravel/mud/sand. Sometimes simply called "dirt bikes" when not being raced, they can also be used for informal off-road recreation, or "mudding."
Supermotos: Beginning in the mid-1990s, motocross machines fitted with street wheels and tyres similar to those used on Sport bikes began to appear. These are known as "Supermotards", and riders of these machines compete in specially organised rallies and races.
Trials motorcycles: Motorcycles made as light as possible, with no seat (as they are designed to be ridden standing up), in order to provide maximum freedom of body positioning and stunt capability for use in observed trials competition.

[edit] Dual-purpose
Dual-sports: Road-legal machines offering a compromise in highway and off-road performance, durability and comfort. Since the requirements are often conflicting, the manufacturer has to choose one or the other, resulting in a great variety of bikes in this category.
Enduros: Road-legal versions of a motocross machine, i.e., featuring high ground clearance and copious suspension with minimal creature comforts. Highly unsuitable for long distance road travel. The features that differ from the motocross versions are the silencers, the flywheel weights and the presence of features necessary for highway use.
Adventure Touring: Closely related to dual-sports, adventure tourers are motorcycles with lighter weight than just about any other bike considered a tourer, but heavier than any traditional dual-sport. Adventure tourers can handle with aplomb rough dirt paths such as fire roads however, for their weight they are generally not suited for anything more strenuous than that. The advantage is their increased number of luxury features and larger engines which make on-road