Definition
In legal contexts, "car" carries two principal meanings that depend heavily on the era and subject matter of the source:
1. (Historical) A cart or wheeled vehicle drawn by animals. In medieval and early common law texts, "car" (also rendered as "carre" or "caretta") referred to a two- or four-wheeled cart used for hauling goods, typically horse-drawn. The term appears in Fleta and similar early sources in discussions of agricultural service, cartage obligations, and manorial duties.
2. (Modern, commercial and tort law) A railroad car or railway carriage. By the nineteenth century, American legal usage consolidated around "car" as shorthand for a railroad car—a vehicle adapted to run on rails, forming part of a train consist. This is the dominant legal meaning in American case law, statutes, and contracts from roughly 1850 onward. Anderson's Dictionary reflects this usage directly, cross-referencing "car" to the entries for Common Carrier and Railroad.
A third usage—the self-propelled motor vehicle—dominates ordinary modern speech but entered statutory law primarily through the twentieth century under terms such as "motor vehicle," "automobile," or "motor car." Pure legal drafting in modern statutes rarely relies on "car" alone as a defined term.
Common Language
Modern common usage (Wiktionary): A wheeled vehicle that moves independently, with at least three wheels, powered mechanically, steered by a driver, and used mostly for personal transportation; smaller than a truck or bus.
Historical common usage (Webster's 1913): A small vehicle moved on wheels, usually having two wheels and drawn by one horse; a cart. Also, a vehicle adapted to the rails of a railroad (U.S. usage noted). Poetically, a chariot of war or triumph.
The gap between common and legal meaning is significant for historical research. A modern researcher encountering "car" in a nineteenth-century legal document will likely picture a motor vehicle—but the document almost certainly means a railroad car. In medieval legal sources the term is more archaic still, referring to an animal-drawn cart. The motor vehicle sense is conspicuously absent from both major historical dictionary sources covering this term.
Common Confusion
"Car" and "carriage" overlap in older sources and are sometimes used interchangeably in railroad contexts. In railroad law, "car" typically refers to freight or passenger cars running on rails, while "carriage" in the same period often carried broader common-carrier meaning (the act of transporting, not merely the vehicle). Researchers should also distinguish "car" from "carreta" or "caretta," the Latin and Anglo-Norman forms appearing in Fleta and similar sources, which refer strictly to animal-drawn carts and carry no railroad connotation.
Recognized Forms
/SUBTYPES
Car load: A recognized unit of measure in commercial contracts, referring to the quantity of goods sufficient to fill a railroad car. Anderson's notes a contract for a "certain number of car loads of ice" and the question of whether such a contract is void for uncertainty—indicating that "car load" had legal significance as a contractual term of art in freight and commodity agreements.
Why It Matters in Research
The term's meaning is not stable across time, and misreading it is an easy error. Three research cautions apply:
First, period matters decisively. In sources pre-dating the railroad era (pre-1830s), "car" signals animal-drawn transport and connects to manorial, agricultural, and cartage law. In sources from roughly 1840–1950, the default American legal meaning is railroad car. The motor vehicle sense, though now dominant in speech, rarely appears as an unqualified "car" in careful statutory drafting—look instead for "motor vehicle" or "automobile."
Second, the "car load" concept in freight contracts is a discrete research node. Disputes about what constitutes a car load—whether by weight, volume, or custom—generated commercial litigation throughout the late nineteenth and early twentieth centuries. Anderson's entry points toward this line of cases, and researchers pursuing freight contract disputes should treat "car load" as its own search term.
Third, railroad car safety was a major field of employer liability and tort law before workers' compensation regimes matured. Negligence claims involving defective cars, coupling mechanisms, and car inspection duties produced substantial case law. Anderson's cross-references to Common Carrier and Railroad are the correct onward paths for this research.
Historical Dictionary Support
Burrill's Law Dictionary approaches "car" through its Latin and Anglo-Norman roots, citing Fleta for the sense of loading or charging a cart ("carricare") and for fixed rates associated with carts drawn by two or three horses. This is squarely the medieval cartage context—relevant to manorial obligations and early highway or portage law, but of limited utility for post-railroad legal research. Burrill does not address the railroad sense at all, reflecting the dictionary's predominantly English and pre-industrial framing.
Anderson's Dictionary of Law, by contrast, treats "car" entirely within the American railroad context. Its entry cross-references Common Carrier and Railroad without offering an independent definition of the vehicle itself, and its substantive content addresses the "car load" contract problem and the standard of care owed by railroads to employees in connection with car management. Anderson's framing—care owed with respect to "the exigencies of the particular service"—echoes the reasonable care standard developing in American employer liability doctrine during the late nineteenth century.
Neither dictionary addresses the motor vehicle sense of "car," which is consistent with their periods of publication. Researchers should not expect these sources to illuminate automobile law.
Jurisdictional Note
"Car" as a legal term is predominantly American in its railroad sense; British legal sources of the same period more commonly use "carriage" or "waggon" for rail vehicles. The medieval cartage sense appears in both English and Continental sources through the influence of Fleta and similar texts. Modern motor vehicle statutes are jurisdiction-specific and typically define their operative terms (e.g., "motor vehicle," "passenger vehicle") without relying on the unmodified word "car."