Definition
Carriers are persons or entities that undertake, for hire or gratuitously, the transportation of goods or passengers from one place to another. The law has long distinguished between two principal categories:
1. Common Carriers: Those who hold themselves out to the public as being in the business of transporting goods or passengers for compensation, without discrimination among customers. A common carrier's legal obligations are strict: it is held to the highest degree of care for passengers and, at common law, was treated as a virtual insurer of goods entrusted to it, liable for loss or damage regardless of negligence except for a narrow set of recognized defenses (acts of God, acts of a public enemy, inherent vice of the goods, fault of the shipper, or order of public authority).
2. Private Carriers: Those who transport goods or persons only by special contract, not as a general public service. Private carriers are held only to ordinary negligence standards and do not carry the near-absolute liability of a common carrier.
The category also encompasses subcategories defined by the subject of carriage — carriers of goods (freight) and carriers of passengers — each governed by somewhat different duty standards, though both categories fall under the broader carrier framework.
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Common Language
Modern common usage (Wiktionary): Plural of carrier — one who carries or transports something; also used in insurance, telecommunications, and genetics contexts.
Historical common usage (Webster's 1913): A person or company engaged in carrying goods or passengers for hire; also, a carrier pigeon.
The gap between common and legal meaning is significant in degree, not kind. Everyday usage treats "carrier" as simply anyone who transports something. Legal usage imposes a structural distinction — common versus private carrier — that carries enormous consequences for liability. A trucking company and a neighbor helping you move are both "carriers" in ordinary speech; in law, they occupy entirely different liability universes.
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Recognized Forms
/SUBTYPES
Common Carrier: Holds out services to the general public; subject to heightened duties of care and, historically, near-absolute liability for goods.
Private Carrier: Transports by individual contract; subject only to ordinary negligence standards.
Carrier of Goods (Freight Carrier): Primary concern is safe delivery of cargo; liable for loss or damage subject to recognized common law defenses and, in modern practice, statutory limitations (e.g., COGSA for ocean shipments, Carmack Amendment for rail and motor freight).
Carrier of Passengers: Owes the highest degree of care for passenger safety; liability arises from personal injury and, in some contexts, loss of or damage to baggage entrusted to the carrier's custody.
Gratuitous Carrier: One who transports without charge; typically held only to ordinary or slight negligence standards, not the heightened duty of the common carrier.
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Why It Matters in Research
The common/private carrier distinction is the single most important threshold question in historical carrier research. It determines the applicable standard of liability, the available defenses, and the measure of damages — and historical sources treat it as foundational. Researchers should not assume that a transportation entity labeled a "carrier" in a historical source automatically carries common carrier duties; the factual question of whether the entity held itself out to the general public was frequently litigated.
Measure of damages for total loss of goods is a recurring research issue. Bouvier's reflects the period rule that the carrier is liable for the value of goods at the place of destination, with interest from the time delivery should have occurred, less the freight charges. This formula appears across jurisdictions in 19th-century cases and is worth tracking against the specific jurisdiction and period under research.
Baggage is a persistent gray area. Bouvier's illustrates this with the passenger/dog scenario: the question of what constitutes baggage properly delivered to the carrier's custody — and what liability attaches when items travel outside normal baggage arrangements — was genuinely contested. Researchers working with passenger claims from the railroad era should expect considerable doctrinal instability around baggage liability, particularly for animals, valuables, and items of unusual nature.
The shift from common law carrier liability to statutory regimes is a major corpus fault line. Federal statutes — including the Interstate Commerce Act, the Carmack Amendment (1906), and COGSA (1936 for ocean carriage) — substantially displaced common law rules for interstate and maritime carriers. Historical sources pre-dating these statutes will reflect common law doctrine that is no longer operative for regulated carriers. Researchers must be alert to whether a source predates or postdates the relevant statutory framework.
Perishable goods create a distinct sub-issue both for carrier liability (what defenses apply when goods deteriorate in transit) and for attachment proceedings (Bouvier's notes that fattened cattle and potatoes qualified as perishable property, while fashion-driven depreciation did not). These doctrinal specifics matter when reading 19th-century freight damage cases.
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Historical Dictionary Support
Bouvier's Law Dictionary addresses carriers substantively, with particular attention to the liability of carriers for goods and passengers. Its treatment reflects the classical common law framework: common carriers as near-insurers of entrusted goods, subject to a defined set of excepted perils. The measure of damages formula Bouvier's documents — destination value plus interest minus freight — aligns with the dominant 19th-century American rule and is consistent across the jurisdictions cited in its case collection.
Bouvier's is useful on the passenger baggage question, illustrating through the dog-carriage scenario that the rules for items accompanying passengers were applied with some flexibility and that ignorance of carrier rules could mitigate a passenger's contributory fault. This is historically instructive but should not be read as settled doctrine: baggage liability rules varied considerably by jurisdiction and evolved rapidly with expanding railroad travel.
What Bouvier's does not address — because it could not — is the statutory transformation of carrier law in the 20th century. The Carmack Amendment, COGSA, and federal motor carrier regulation fundamentally altered the liability landscape in ways that common law treatises and dictionaries of the Bouvier's era cannot capture. Researchers should treat Bouvier's as authoritative for the common law baseline and consult statutory sources and post-1906 treatises for regulated carrier law.
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Jurisdictional Note
Federal law now dominates for interstate carriers of goods: the Carmack Amendment preempts state common law claims for most rail and motor freight shipments, and COGSA governs ocean carriage of goods to and from the United States. State common law carrier doctrine retains significance for intrastate carriage, gratuitous carriers, and carriers of passengers in contexts not preempted by federal regulation.
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Encyclopedia Cross-Reference
COGSA — Carrier Liability, Package Limitation, and the Fair Opportunity Doctrine (Law Mind Military, Veterans & Admiralty Law Encyclopedia)
Motor Vehicle and Transportation Torts — Common Carrier Liability (Airlines, Railroads, Buses) (Law Mind Torts & Personal Injury Encyclopedia)
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