Common carriers occupy a special place in the law. Because they hold themselves out to serve the general public and because passengers and shippers must trust them with their safety and property, the law imposes heightened duties and, in some cases, strict liability. Paralegals in personal injury, transportation, and insurance practices should understand these rules, and exam questions often test them in the context of both torts and bailments.

What Is a Common Carrier?

A common carrier is a business that transports people or goods for compensation and offers its services indiscriminately to the public. Typical examples include airlines, railroads, buses, taxis in many jurisdictions, ferries, commercial shipping companies, and trucking companies that serve the general public. The key characteristic is the public holding out. A business that serves only a limited group of customers under individually negotiated contracts is usually a private carrier, not a common carrier.

Whether a rideshare company is a common carrier is a developing question that varies by state. Some jurisdictions classify these services under special statutes, while others apply common carrier rules to certain aspects of the business.

Common Carrier vs. Private Carrier

Common carrier: serves the public generally, must accept all customers who tender proper fare or freight, and is held to a heightened standard.
Private carrier (contract carrier): transports for particular customers under specific agreements, may choose its customers, and is generally held to ordinary reasonable care or the terms of the contract.

Duty to Passengers

Traditionally, the common law imposed on carriers the highest degree of care consistent with the practical operation of the business. Many modern courts have reformulated this as a duty of utmost care or a duty of reasonable care under the circumstances, but with an understanding that the circumstances include the dangers of transport and the passenger's dependence on the carrier. In practice, the carrier is expected to do the following.

Maintain vehicles and equipment in safe condition and inspect them regularly.
Hire competent, trained, and licensed operators.
Provide safe boarding and exit, including adequate lighting and clear areas.
Protect passengers from foreseeable harm by other passengers or third parties, such as assaults that the carrier knew or should have known might occur.
Provide aid and medical help to passengers who are injured or ill, within reason.

Carriers are generally not insurers of passenger safety. A carrier is not liable merely because an accident occurs, and the plaintiff must still show a breach of the heightened standard and causation. In many cases, however, courts apply res ipsa loquitur when the accident is of a type that ordinarily does not happen without negligence and the carrier controlled the instrumentality.

Liability for Goods

When a common carrier accepts goods for shipment, a bailment relationship arises, and the carrier is traditionally treated as an insurer of the goods. At common law, the carrier is strictly liable for loss, damage, or delay in delivery, subject to a few narrow exceptions. The shipper establishes a prima facie case by showing that the goods were delivered to the carrier in good condition, arrived damaged or did not arrive, and the amount of damages. The burden then shifts to the carrier to prove that an exception applies.

Traditional Exceptions

Act of God: natural events that could not be prevented by human foresight, such as unprecedented floods or earthquakes.
Act of a public enemy: such as war or armed hostilities.
Act of the shipper: negligent packing or improper labeling by the shipper.
Act of public authority: seizure of goods by lawful government order.
Inherent nature of the goods: spoilage of perishables or natural deterioration.

Even when an exception applies, the carrier remains liable if its own negligence contributed to the loss.

Limitation of Liability

Carriers often try to limit liability through tickets, bills of lading, and tariffs. The enforceability of such limits depends on several factors. A common carrier generally cannot disclaim liability for its own negligence in transporting passengers, because doing so would offend public policy. For goods, federal statutes such as the Carmack Amendment for interstate motor and rail shipments allow carriers to limit liability to a declared value if the shipper has a fair opportunity to choose between higher and lower liability levels at corresponding rates. International air carriage is governed by treaties such as the Montreal Convention, which set liability regimes and caps in certain circumstances.

Duty to Serve and Nondiscrimination

Because common carriers are quasi public, they must accept all passengers or cargo within their stated capacity and services unless there is a lawful reason to refuse. Reasons that justify refusal include a passenger who is disorderly, intoxicated in a manner that disturbs others, unwilling to pay the fare, or carrying hazardous items. Carriers may not discriminate based on protected characteristics. Civil rights laws and disability access statutes impose additional obligations.

Passenger Duties and Defenses

Passengers also have duties, and carriers may raise defenses based on passenger conduct.

Contributory or comparative negligence: a passenger who ignores clear safety instructions may bear part of the fault.
Assumption of risk: limited in the passenger context, but may apply if the passenger knowingly rides in an unsafe location.
Superseding cause: an extraordinary intervening event unrelated to the carrier's conduct.
Preemption: federal law may displace state claims, particularly for airlines and interstate shippers.

The Paralegal's Role in Carrier Cases

Carrier cases involve unique evidence, such as maintenance logs, driver qualification files, black box data, bills of lading, and tariffs. A paralegal can help send preservation letters promptly, because electronic data may be overwritten quickly. Others tasks include identifying the correct defendant among carriers, brokers, and subcontractors, gathering ticket terms and notice requirements, and calendaring short claim notice deadlines that carriers often impose by contract or statute.

Frequently Asked Questions

Is a carrier always strictly liable for passenger injuries?

No. Strict liability generally applies to goods, while passenger claims require proof of a breach of the heightened duty of care.

Are taxis common carriers?

In many states, yes, because they hold themselves out to the general public. The classification depends on local law.

Can a carrier limit liability for lost luggage?

Often yes, within limits set by statute, treaty, or valid contractual terms, provided the passenger had notice and the opportunity to declare a higher value.

What is the difference between a bailee and a common carrier?

A common carrier is a special type of bailee for hire that is held to a stricter standard of liability for the goods it carries.

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Liability of Common Carriers: Duties, Standards, and Defenses