Conditions of carriage are the standard contractual terms on which a carrier transports passengers, baggage or goods, typically by air, sea, rail, road or multimodal transport. They govern issues such as the carrier’s duties, exclusions and limitations of liability, delay, cancellation, loss or damage, passenger conduct, documentation requirements and claims procedures. In UK and Irish practice, conditions of carriage are usually incorporated by reference into tickets, consignment notes or online booking terms, and operate alongside mandatory regimes such as the Montreal Convention (air), CMR (road), Hague‑Visby Rules (sea), rail regulations and consumer protection legislation. They are not generally defined in statute but are a widely used contractual and commercial expression, shaped by case law on incorporation, unfair terms and limitation clauses. Courts in England and Wales, Scotland, Northern Ireland and Ireland broadly treat conditions of carriage consistently, focussing on effective notice, contractual interpretation, statutory overrides and public policy controls (for example unfair terms in consumer contracts). For practitioners, analysing applicable conditions of carriage is essential in advising on risk allocation, drafting transport contracts, litigating cargo and passenger claims, and assessing limitation and jurisdiction clauses.