Definition
A bicycle is a two-wheeled, human-powered vehicle propelled by the rider, typically through pedals and cranks. In law, the significance of the term has always turned less on the object itself than on how the law classifies it — as a vehicle, carriage, or other conveyance — for purposes of traffic regulation, road rights, toll liability, park access, and public safety statutes.
Common Language
Modern common usage (Wiktionary): A vehicle with two primary wheels arranged in line, a steering handle, and a saddle seat, usually propelled by pedaling. Secondarily, any human-pedaled vehicle regardless of wheel count; also informal for motorbike; also a logging industry term for a traveling block on a cable; also the best hand in lowball poker.
Historical common usage (Webster's 1913): A light vehicle having two wheels one behind the other, with a saddle seat and foot-operated cranks or levers.
The common meaning is stable and presents no real confusion. The legal complexity lies not in what a bicycle is but in what statutory category it falls into — a question that has yielded inconsistent answers across jurisdictions and time periods. Whether a bicycle is a "carriage," a "vehicle," a "locomotive," or something else entirely determines which rules apply, and the ordinary English definition of bicycle offers no guidance on that question.
Common Confusion
Two recurring classification problems appear in historical legal sources. First, courts and legislatures disagreed whether a bicycle is a "carriage" — relevant to fast-driving prohibitions, toll liability, and road-use regulations. English and American authorities reached opposite conclusions on similar statutory language. Second, multi-wheeled or motor-assisted variants (tricycles, steam-assisted cycles) raised separate classification questions under locomotive and highway acts, producing outcomes that do not carry over neatly to the standard bicycle. Researchers should not assume that a ruling on a tricycle, velocipede, or motor-assisted cycle resolves the status of an ordinary bicycle under the same statute.
Why It Matters in Research
The term BICYCLE itself rarely appears as a legal term of art. Its legal significance is almost entirely derivative — it matters because of how a given court or statute classifies it. Researchers working in late nineteenth- and early twentieth-century materials will encounter this classification question repeatedly, and the answers are inconsistent enough to require jurisdiction-specific analysis.
Road rights: Bouvier's reflects the emerging American consensus that a bicycle is a vehicle with equal rights of the road. This was not always the settled position, and earlier materials may reflect municipal or state resistance to that view.
Statutory classification traps: Anderson's illustrates the problem directly. The same object — a bicycle or tricycle — could be a "carriage" for purposes of one statute and not a carriage for purposes of another, depending on the statutory text and the jurisdiction. English turnpike toll cases and American fast-driving cases produced conflicting results on nearly identical facts. Researchers must identify the specific statute at issue and treat each classification question as independent.
Park regulations: Anderson's notes that New York park commissioners retained discretionary authority to prohibit bicycles from parks. This was a live regulatory controversy in the 1890s, and corpus materials from that period may reflect municipal ordinances, commission rules, or litigation over exclusion orders that are not indexed under traffic or highway law.
The steam-assisted tricycle locomotive question is historically interesting but largely a dead end for modern research — it reflects a transitional moment in transportation technology that did not survive into the twentieth century in legally significant form.
Historical Dictionary Support
Bouvier's and Anderson's agree on the baseline: a bicycle is a two-wheeled, rider-propelled vehicle with lawful access to public highways. They also agree that highway rights are shared equally with horse-drawn conveyances — a point Bouvier's emphasizes by citing Minnesota authority.
They diverge, predictably, on classification. Anderson's presents the classification question as genuinely open, citing conflicting authority across statutes and jurisdictions. Bouvier's is more direct and less equivocal, treating road equality as settled. This reflects the difference between the two dictionaries' approaches generally: Bouvier's tends toward synthesis and principle; Anderson's tends toward cataloguing specific statutory and judicial outcomes.
What both sources miss: neither addresses the twentieth-century regulatory framework that would come to govern bicycles — traffic codes, vehicle registration schemes, helmet laws, dedicated lane infrastructure, or liability standards in personal injury litigation. Their entries are snapshots of a transitional period in which the bicycle was a novelty being fitted awkwardly into legal categories designed for horses and carriages.
Jurisdictional Note
Classification of a bicycle as a "vehicle" for traffic law purposes is now standard across American jurisdictions, though the specific rules governing bicycle operation vary considerably by state and municipality. Researchers working in English legal materials should treat English statutory classifications as independent of American ones — the Turnpike Act toll cases and the Highways and Locomotive Act locomotive cases do not translate to American statutory contexts.