Moped in the context of "Electric bicycle"

A centrifugal clutch is an automatic clutch that uses centrifugal force to operate. The output shaft is disengaged at lower rotational speed and engages as the output increases to a certain speed. It is often used in mopeds, underbones, lawn mowers, go-karts, chainsaws, mini bikes, and some paramotors and boats to keep the engine from stalling when the output shaft is slowed or stopped abruptly, and to remove load when starting and idling. It has been superseded for automobile applications by the fluid coupling, torque converter and automated manual transmissions.

A shared-use path, mixed-use path or multi-use pathway is a path which is "designed to accommodate the movement of pedestrians and cyclists". Examples of shared-use paths include sidewalks designated as shared-use, bridleways and rail trails. A shared-use path typically has a surface that is asphalt, concrete or firmly packed crushed aggregate. Shared-use paths differ from cycle tracks and cycle paths in that shared-use paths are designed to include pedestrians even if the primary anticipated users are cyclists.

The path may also permit other users such as inline skating. Contrastingly, motorcycles and mopeds are normally prohibited. Shared-use paths sometimes provide different lanes for users who travel at different speeds to prevent conflicts between user groups on high-use trails. Shared-use paths are criticised for creating conflict between different users. The UK's Department for Transport deprecates this kind of route in denser urban environments.

A personal transporter (also powered transporter, electric rideable, personal light electric vehicle, personal mobility device, etc.) is any of a class of compact, mostly recent (21st century), motorised micromobility vehicle for transporting an individual at speeds that do not normally exceed 25 km/h (16 mph). They include electric skateboards, kick scooters, self-balancing unicycles and Segways, as well as gasoline-fueled motorised scooters or skateboards, typically using two-stroke engines of less than 49 cc (3.0 cu in) displacement. Many newer versions use recent advances in vehicle battery and motor-control technologies. They are growing in popularity, and legislators are in the process of determining how these devices should be classified, regulated and accommodated during a period of rapid innovation.

Generally excluded from this legal category are electric bicycles (that are considered to be a type of bicycle); electric motorbikes and scooters (that are treated as a type of motorcycle or moped); and powered mobility aids with 3 or 4 wheels on which the rider sits (which fall within regulations covering powered mobility scooters).

Pedelec (from pedal electric cycle), or EPAC (electrically power-assisted cycle), or EAPC, is the term for electric bicycles or e-bikes where the electric motor is controlled by the rider's pedalling. In many countries this term describes the majority or all electric bicycles legally in use, but is not itself a legal description and as such seldom used. Many jurisdictions classify pedelec-type bicycles almost the same as unmotorized bicycles, with few or no legal restrictions, rather than as mopeds, where the riders are subject to the regulations of such motor vehicles, e.g. having a license, a vehicle registration, insurance, wearing a helmet, or age-restrictions.

A two-stroke (or two-stroke cycle) engine is a type of internal combustion engine that completes a power cycle with two strokes of the piston, one up and one down, in one revolution of the crankshaft in contrast to a four-stroke engine which requires four strokes of the piston in two crankshaft revolutions to complete a power cycle. During the stroke from bottom dead center to top dead center, the end of the exhaust/intake (or scavenging) is completed along with the compression of the mixture. The second stroke encompasses the combustion of the mixture, the expansion of the burnt mixture and, near bottom dead center, the beginning of the scavenging flows.

Two-stroke engines often have a higher power-to-weight ratio than a four-stroke engine, since their power stroke occurs twice as often. Two-stroke engines can also have fewer moving parts, and thus are cheaper to manufacture and weigh less. In countries and regions with stringent emissions regulation, two-stroke engines have been phased out in automotive and motorcycle uses. In regions where regulations are less stringent, small displacement two-stroke engines remain popular in mopeds and motorcycles. They are also used in power tools such as chainsaws and leaf blowers. SSG and SLG glider planes are frequently equipped with two-stroke engines.

VéloSoleX is a moped, or motorised bicycle, usually just referred to as 'Solex', which was originally produced by the French manufacturer Solex, based in Courbevoie near Paris, France. The company manufactured centrifugal radiators, carburetors, and micrometers, before branching into assist motors and bicycles. The moped originally created during World War II and mass-produced between 1946 and 1988 came in various iterations, whilst keeping the same concept of a motor with roller resting on the front wheel of a bicycle.

Referred to the company's advertisement as the 'bicycle which drives itself' (« la bicyclette qui roule toute seule »), it became extremely popular with school children, students or plant workers because it was light and extremely economical.

Vespa (Italian pronunciation: [ˈvɛspa]; Italian for 'wasp') is an Italian brand of scooters and mopeds manufactured by Piaggio. The Vespa has evolved from a single model motor scooter manufactured in 1946 by Piaggio & Co. S.p.A. of Pontedera, Italy, to a full line of scooters and one of seven companies today owned by Piaggio.

From their inception, Vespa scooters have been known for a painted, pressed steel body which combines, in a unified structure: a full cowling enclosure around the engine concealing dirt or grease, a flat floor panel protecting the feet, and a prominent front fairing to divert wind and rain.