Public transport

Public transport—also called mass transit, public transportation, or simply transit—covers any shared transportation service available to the general public. These services usually run along set routes and follow published schedules, with passengers paying a standard fare meant to help cover costs, though public subsidies often make up the difference. Exactly which modes count as public transport isn't strictly defined everywhere: buses, railways, trams, light rail, rapid transit, passenger trains, and ferries are typical examples, while air travel is often left out of general discussions because of its market-driven pricing and competitive structure.

Most public transport operates on fixed corridors with designated stops and timetables, which makes operations predictable and infrastructure use efficient. On high-frequency lines, maintaining regular intervals between vehicles often matters more than sticking to exact departure times. Many trips involve more than one mode—walking or taking a feeder bus to reach a train station, for instance—so network coordination and cost-effective planning are key. In some areas, share taxis and other demand-responsive services offer flexible alternatives to fixed-route transit, either competing with or complementing traditional systems. Paratransit services are usually reserved for low-demand areas or passengers who need door-to-door transport, though these trips often cost more per ride.

Public transport systems vary widely by region due to history, geography, and economics. In Japan, many urban networks are run by profit-driven private companies that often tie transit to real estate development—a model noted for its financial sustainability and efficiency. In developing countries, research shows that the service marketing mix strongly affects customer satisfaction, which in turn drives ridership. In North America, mass transit is mostly operated by municipal or regional authorities, funded through fares, local taxes, and government subsidies. In Europe, both state-owned enterprises and private operators provide transit, often under competitive contracts. Because of geographic and economic differences, levels of public transport use and investment vary greatly from country to country. The International Association of Public Transport (UITP) connects over 1,900 members—transit operators, policymakers, researchers, and industry stakeholders—across more than 100 countries.

**History**

The earliest public transport was water transport. Ferries appear in Greek mythology, where the ferryman Charon required payment to take passengers to Hades. Conveyances for public hire date back to the first ferry services. Later forms included stagecoaches traveling fixed routes between coaching inns and horse-drawn boats carrying paying passengers on European canals from the 17th century onward. Canals themselves are ancient infrastructure: in Egypt, they bypassed the Aswan cataract for freight, and in China, canals date to the Warring States period (beginning in the 5th century BCE). Whether those canals carried for-hire passengers is unknown; the Grand Canal (started in 486 BCE) mainly served the grain trade.

The first organized city bus service appeared in Paris in 1662, when mathematician and philosopher Blaise Pascal launched the Carrosses à cinq sols (five-sol coaches). It lasted only fifteen years, ending in 1677. Buses ran in Nantes in 1826, and London introduced public bus transport in July 1829. The first passenger horse-drawn vehicle opened in 1806 on the Swansea and Mumbles Railway. In 1825, George Stephenson built Locomotion No. 1 for the Stockton and Darlington Railway in northeast England—the world's first public steam railway. The first steam-powered underground railway opened in London in 1863. The first successful electric streetcar ran on 11 miles of track for the Union Passenger Railway in Tallahassee, Florida, in 1888. Electric streetcars could carry heavier loads than earlier vehicles, lowering fares and boosting transit use. Within two years, over 32,000 electric streetcars operated in America. They also paved the way for the first U.S. subway: in 1894, Boston built an electric streetcar line in a 1.5-mile tunnel under Tremont Street’s retail district, avoiding the smoke-filled tunnels that had made steam-powered subways unpopular. Other cities soon followed, building thousands of miles of subway. In March 2020, Luxembourg became the first country to make all public transport free, abolishing fares for trains, trams, and buses. The Encyclopædia Britannica notes that public transportation is typically discussed within urban areas but does not limit its definition to them.

**Types of public transport**

When comparing modes, seven criteria are used to estimate usability and overall appeal.