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Bicycle and motorcycle dynamics is the science of the motion of bicycles and motorcycles and their components, due to the forces acting on them. Dynamics falls under a branch of physics known as classical mechanics. Bike motions of interest include balancing, steering, braking, accelerating, suspension activation, and vibration. The study of ...
Under current NHTSA rules, a "motor-driven cycle" (a definition that includes a two-wheel vehicle such as a bicycle with an add-on ICE engine of five brake horsepower or less, a speed capability of more than 20 miles per hour and/or lacks both a Vehicle Identification Number (VIN) and standard on-road safety equipment such as mirrors, turn ...
A bicycle, also called a pedal cycle, bike, push-bike or cycle, is a human-powered or motor-assisted, pedal-driven, single-track vehicle, with two wheels attached to a frame, one behind the other. A bicycle rider is called a cyclist, or bicyclist. Bicycles were introduced in the 19th century in Europe. By the early 21st century there were more ...
On roads where adjacent bike paths or cycle tracks exist, the use of these facilities is compulsory, and cycling on the main carriageway is not permitted. [19] Some 35,000 km of cycle-track has been physically segregated from motor traffic, [20] [21] equal to a quarter of the country's entire 140,000 km road network. [22]
Bicycle drivetrain systems are used to transmit power on bicycles, tricycles, quadracycles, unicycles, or other human-powered vehicles from the riders to the drive wheels. Most also include some type of a mechanism to convert speed and torque via gear ratios .
A cyclocomputer, cycle computer, cycling computer or cyclometer is a device mounted on a bicycle that calculates and displays trip information, similar to the instruments in the dashboard of a car. The computer with display, or head unit, usually is attached to the handlebar for easy viewing. Some GPS watches can also be used as display.
An electric bicycle, e-bike, electrically assisted pedal cycle, or electrically power assisted cycle [1] is a motorized bicycle with an integrated electric motor used to assist propulsion.
A Pedelec (from pedal electric cycle) or EPAC (electronically power assisted cycle), is a type of low-powered electric bicycle where the rider's pedalling is assisted by a small electric motor. However, unlike some other types of e-bikes, pedelecs are classified as conventional bicycles in many countries by road authorities rather than as a ...