Public transport (also known as public transportation, public transit, mass transit, or simply transit) refers to forms of transport made available for use by the general public. Public transport systems typically operate on fixed routes and schedules and charge a standardized fare intended to cover operating costs, often supplemented by public funding where required.
There is no universally fixed definition of which modes are included. While systems such as buses and railways are commonly cited, air travel is often excluded from general discussions of public transport due to its market-driven structure and competitive pricing. Common examples include city buses, trolleybuses, trams (or light rail), rapid transit systems, passenger trains, and ferries. Intercity public transport is primarily provided by airlines, coaches, and intercity rail, with high-speed rail networks under development in several regions.
Most public transport services operate along fixed corridors with designated boarding points and published timetables, allowing for predictable operations and efficient use of infrastructure. High-frequency services often prioritize regular headways over exact departure times. However, many trips involve multimodal travel, such as walking or feeder bus services to access rail stations, highlighting the importance of network coordination and cost-effective planning.
In some regions, share taxis and other demand-responsive services provide flexible alternatives to fixed-route transit, either competing with or complementing traditional systems. Paratransit services are typically reserved for low-demand areas or passengers requiring door-to-door transportation, often at higher per-trip costs.
Public transport systems vary significantly by region due to historical, geographic, and economic factors. In Japan, many urban transit networks are operated by profit-oriented private companies, often integrated with real estate development, a model frequently cited for its financial sustainability and operational efficiency.
In the context of developing nations, empirical research indicates that the service marketing mix significantly influences customer satisfaction, which subsequently drives ridership intention in public transport systems.
In North America, mass transit is most commonly operated by municipal or regional transit authorities, typically funded through a combination of fares, local taxes, and government subsidies. In Europe, both state-owned enterprises and private operators participate in transit provision, often under competitive contracting arrangements.
For geographic and economic reasons, levels of public transport use and investment differ widely across countries. The International Association of Public Transport (UITP) serves as a global network for transit operators, policymakers, researchers, and industry stakeholders, with more than 1,900 members across over 100 countries.
History
Conveyances designed for public hire are as old as the first ferry service. The earliest public transport was water transport.See Pre Columbian Wheels Ferries appear in Greek mythology writings. The mystical ferryman Charon had to be paid and would only then take passengers to Hades.
Some historical forms of public transport include the stagecoaches traveling a fixed route between coaching inns, and the horse-drawn boat carrying paying passengers, which was a feature of European canals from the 17th century onwards. The canal itself as a form of infrastructure dates back to antiquity. In ancient Egypt canals were used for freight transportation to bypass the Aswan cataract. The Chinese also built canals for water transportation as far back as the warring States periodNeedham, Joseph. (1986). Science and Civilization in China: Volume 4, Physics and Physical Technology, Part 3, Civil Engineering and Nautics. Taipei: Caves Books, Ltd. which began in the 5th century BCE. Whether or not those canals were used for for-hire public transport remains unknown; the Grand Canal in China (begun in 486 BCE) served primarily the grain trade.
The bus, the first organized public transit system within a city, appears to have originated in Paris in 1662,web-page (in French) at http://www.herodote.net/histoire/evenement.php?jour=18260810 . Retrieved 13 June 2008 although the service in question, Carrosses à cinq sols (English: five-sol coaches), which have been developed by mathematician and philosopher Blaise Pascal, lasted only fifteen years until 1677. Buses are known to have operated in Nantes in 1826. The public bus transport system was introduced to London in July 1829.
The first passenger horse-drawn vehicle opened in 1806. It ran along the Swansea and Mumbles Railway.
In 1825, George Stephenson built the Locomotion No 1 for the Stockton and Darlington Railway in northeast England, the first public steam railway in the world. The world's first steam-powered underground railway opened in London in 1863.
The first successful electric streetcar was built for 11 miles of track for the Union Passenger Railway in Tallahassee, Florida, in 1888. Electric streetcars could carry heavier passenger loads than predecessors, which reduced fares and stimulated greater transit use.
Two years after the Richmond success, over thirty-two thousand electric streetcars were operating in America. Electric streetcars also paved the way for the first subway system in America. Before electric streetcars, steam powered subways were considered. However, most people believed that riders would avoid the smoke-filled subway tunnels from the steam engines. In 1894, Boston built the first subway in the United States, an electric streetcar line in a 1.5-mile tunnel under Tremont Street's retail district. Other cities quickly followed, constructing thousands of miles of subway in the following decades.
In March 2020, Luxembourg abolished fares for trains, trams and buses and became the first country in the world to make all public transport free.
The Encyclopædia Britannica specifies that public transportation is within urban areas, but does not limit its discussion of the topic to urban areas.
Types of public transport
Comparing modes Seven criteria estimate the usability of different types of public transport and its overall appeal. The criteria are speed, comfort, safety, cost, proximity, timeliness and directness. Speed is calculated from total journey time including transfers. Proximity means how far passengers must walk or otherwise travel before they can begin the public transport leg of their journey and how close it leaves them to their desired destination. Timeliness is how long they must wait for the vehicle. Directness records how far a journey using public transport deviates from a passenger's ideal route.
In selecting between competing modes of transport, many individuals are strongly motivated by direct cost (travel fare/ticket price to them) and convenience, as well as being informed by habit. The same individual may accept the lost time and statistically higher risk of accident in private transport, together with the initial, running and parking costs. Loss of control, spatial constriction, overcrowding, high speeds/accelerations, height and other phobias may discourage use of public transport. The transport hub makes it easier for travellers to use different modes of transport during one trip.
Actual travel time on public transport becomes a lesser consideration when predictable and when travel itself is reasonably comfortable (seats, toilets, services), and can thus be scheduled and used pleasurably, productively or for (overnight) rest. Chauffeured movement is enjoyed by many people when it is relaxing, safe, but not too monotonous. Waiting, interchanging, stops and holdups, for example due to traffic or for security, are discomforting.
Airline
An airline provides scheduled service with aircraft between airports, the majority using airplanes. Air travel has high speeds, but incurs large waiting times before and after travel, and is therefore often only feasible over longer distances or in areas where a lack of surface infrastructure makes other modes of transport impossible. Since the 1970s, the hub-and-spoke system increased in popularity, compared to point-to-point flights. Jet lag is a human constraint discouraging frequent rapid long-distance east–west commuting.
Bush airlines work more similarly to bus stops; an aircraft waits for passengers and takes off when the aircraft is full.
Bus and coach
Bus services use buses on conventional roads to carry numerous passengers on shorter journeys. Buses operate with a relatively low capacity compared with trams, light rail, or trains, and can operate on conventional roads, with relatively inexpensive bus stops to serve passengers. Therefore, buses are commonly used in smaller cities, towns, and rural areas, and for shuttle services (e.g. to the airport) supplementing other means of transit in large cities. Midibuses have an ever lower capacity, however double decker buses, articulated buses and bi-articulated buses have a slightly larger capacity.
Intercity bus service use coaches (long-distance buses) for suburb-to-CBD or longer-distance transportation. The vehicles are normally equipped with more comfortable seating, a separate luggage compartment, video and possibly also a toilet. They have higher standards than city buses, but a limited stopping pattern.
Certain types of buses, styled after old-style streetcars, are also called trackless trolleys, but are built on the same platforms as a typical diesel, CNG, or hybrid bus; these are more often used for tourist rides than commuting and tend to be privately owned. Similarly, trackless trains are often used for moving tourists between sights, often at beach resorts, or visitors within amusement parks, among others.
In recent years, the world has significantly shifted toward sustainability and eco-conscious systems. This involves the deployment of technology and the large-scale integration of electric vehicles (EVs). According to the International Finance Corporation (IFC), the transition to electric buses represents a critical frontier in transportation engineering . This transition requires engineers to redesign power grids and depot logistics to accommodate charging demands while balancing the high upfront costs of zero-emission fleets against long-term operational savings. However, although buses contribute to a little percent of overall road travel, their frequent usage rate makes them a notable contributor to GHG emissions . The Environmental Protection Agency (EPA) affirms that transitioning to buses with zero emissions can reduce the outflow of greenhouse gases by 65% when compared to the regular fossil fuel powered buses . It is no news the harmful effects these greenhouse gases have on the environment at large. Their harmful impacts span across the atmosphere, Biosphere, lithosphere, and the hydrosphere.
As reliance on battery and fossil fuels powered buses and transport systems as a whole continues to drop and transitions to renewable energy continue to take place, environmental remediation can be achieved . Furthermore, to achieve a net zero emissions rate by 2050, a quota of over 75% electric bus sales should be achieved by 2030 . This has brought about a huge global market, with these energy or electric buses being sold by manufacturers on B2B platforms such as Alibaba.
Coaches and trains are not left out in this technological advancement; electric coaches are currently used widely in Europe and Asia. On the other hand, some regions rely on diesel-electric coaches that make use of fossil fuel and electricity for locomotion . Although the diesel-electric engines are not purely sustainable and might not look like a complete development, it’s an improvement of the already existing traditional system.
Trolleybus and electric buses