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Transport economics is a branch of economics founded in 1959 by American economist John R. Meyer that deals with the allocation of resources within the transport sector. It has strong links to civil engineering. Transport economics differs from some other branches of economics in that the assumption of a spaceless, instantaneous economy does not hold. People and goods flow over networks at certain speeds. Demands peak. Advance ticket purchase is often induced by lower fares. The networks themselves may or may not be competitive. A single trip may require the bundling of services provided by several firms, agencies and modes.
The Singapore Area Licensing Scheme (ALS), was a road pricing scheme introduced in 1975 to 1998, charged drivers who were entering downtown Singapore, and thereby aimed to manage traffic demand. This was the first urban traffic congestion pricing scheme to be successfully implemented in the world. This scheme affected all roads entering a 6-square-kilometre area in the Central Business District (CBD) called the "Restricted Zone" (RZ), later increased to 7.25 square kilometres to include areas that later became commercial in nature. The scheme was replaced in 1998 by the Electronic Road Pricing.
Commuting is periodically recurring travel between one's place of residence and place of work or study, where the traveler, referred to as a commuter, leaves the boundary of their home community. By extension, it can sometimes be any regular or often repeated travel between locations, even when not work-related. The modes of travel, time taken and distance traveled in commuting varies widely across the globe. Most people in least-developed countries continue to walk to work. The cheapest method of commuting after walking is usually by bicycle, so this is common in low-income countries but is also increasingly practised by people in wealthier countries for environmental and health reasons. In middle-income countries, motorcycle commuting is very common.
Lewis Mumford was an American historian, sociologist, philosopher of technology, and literary critic. Particularly noted for his study of cities and urban architecture, he had a broad career as a writer. He made signal contributions to social philosophy, American literary and cultural history, and the history of technology.
The Lewis–Mogridge position, named after David Lewis and Martin J. H. Mogridge, was formulated in 1990 and observes that as more roads are built, more traffic consequently fills these roads. Speed gains from some new roads can disappear within months, if not weeks. Sometimes, new roads help to reduce traffic jams, but, in most cases, the congestion is only shifted to another junction.
In economics, induced demand – related to latent demand and generated demand – is the phenomenon whereby an increase in supply results in a decline in price and an increase in consumption. In other words, as a good or service becomes more readily available and mass produced, its price goes down and consumers are more likely to buy it, meaning that quantity demanded subsequently increases. This is consistent with the economic theory of supply and demand.
Urban sprawl is defined as "the spreading of urban developments on undeveloped land near a city". Urban sprawl has been described as the unrestricted growth in many urban areas of housing, commercial development, and roads over large expanses of land, with little concern for urban planning. In addition to describing a special form of urbanization, the term also relates to the social and environmental consequences associated with this development. Medieval suburbs suffered from the loss of protection of city walls, before the advent of industrial warfare. Modern disadvantages and costs include increased travel time, transport costs, pollution, and destruction of the countryside. The cost of building urban infrastructure for new developments is hardly ever recouped through property taxes, amounting to a subsidy for the developers and new residents at the expense of existing property taxpayers.
Braess's paradox is the observation that adding one or more roads to a road network can slow down overall traffic flow through it. The paradox was first discovered by Arthur Pigou in 1920, and later named after the German mathematician Dietrich Braess in 1968.
Sustainable transport refers to ways of transportation that are sustainable in terms of their social and environmental impacts. Components for evaluating sustainability include the particular vehicles used for road, water or air transport; the source of energy; and the infrastructure used to accommodate the transport. Transport operations and logistics as well as transit-oriented development are also involved in evaluation. Transportation sustainability is largely being measured by transportation system effectiveness and efficiency as well as the environmental and climate impacts of the system. Transport systems have significant impacts on the environment, accounting for between 20% and 25% of world energy consumption and carbon dioxide emissions. The majority of the emissions, almost 97%, came from direct burning of fossil fuels. In 2019, about 95% of the fuel came from fossil sources. The main source of greenhouse gas emissions in the European Union is transportation. In 2019 it contributes to about 31% of global emissions and 24% of emissions in the EU. In addition, up to the COVID-19 pandemic, emissions have only increased in this one sector. Greenhouse gas emissions from transport are increasing at a faster rate than any other energy using sector. Road transport is also a major contributor to local air pollution and smog.
In urban planning, transit-oriented development (TOD) is a type of urban development that maximizes the amount of residential, business and leisure space within walking distance of public transport. It promotes a symbiotic relationship between dense, compact urban form and public transport use. In doing so, TOD aims to increase public transport ridership by reducing the use of private cars and by promoting sustainable urban growth.
Paratransit is the term used in North America, also known by other names such as community transport (UK), for transportation services that supplement fixed-route mass transit by providing individualized rides without fixed routes or timetables. Paratransit services may vary considerably on the degree of flexibility they provide their customers. At their simplest they may consist of a taxi or small bus that will run along a more or less defined route and then stop to pick up or discharge passengers on request. At the other end of the spectrum—fully demand responsive transport—the most flexible paratransit systems offer on-demand call-up door-to-door service from any origin to any destination in a service area. In addition to public transit agencies, paratransit services may be operated by community groups or not-for-profit organizations, and for-profit private companies or operators.
In transport economics, the value of time is the opportunity cost of the time that a traveler spends on their journey. In essence, this makes it the amount that a traveler would be willing to pay in order to save time, or the amount they would accept as compensation for lost time.
The Downs–Thomson paradox, also known as the Pigou–Knight–Downs paradox, states that the equilibrium speed of car traffic on a road network is determined by the average door-to-door speed of equivalent journeys taken by public transport.
Passengers per hour per direction (p/h/d), passengers per hour in peak direction (pphpd) or corridor capacity is a measure of the route capacity of a rapid transit or public transport system.
The environmental effects of transport are significant because transport is a major user of energy, and burns most of the world's petroleum. This creates air pollution, including nitrous oxides and particulates, and is a significant contributor to global warming through emission of carbon dioxide. Within the transport sector, road transport is the largest contributor to global warming.
Public transport is a system of transport for passengers by group travel systems available for use by the general public unlike private transport, typically managed on a schedule, operated on established routes, and that charge a posted fee for each trip. There is no rigid definition of which kinds of transport are included, and air travel is often not thought of when discussing public transport—dictionaries use wording like "buses, trains, etc." Examples of public transport include city buses, trolleybuses, trams and passenger trains, rapid transit and ferries. Public transport between cities is dominated by airlines, coaches, and intercity rail. High-speed rail networks are being developed in many parts of the world.
GoCar is the first Carsharing service in Ireland. GoCar members can book cars online or via the app for as little as an hour, then unlock with their phone or GoCard; the keys are in the car, with fuel, insurance and city parking all included. Rates start from €8 per hour, with 50 km of driving included on each trip. GoCar now has over 10,000 members and operates a fleet of over 300 cars across 200+ locations in Ireland. Drivers can visit GoCar.ie to request a GoCar in their community. It launched in Cork in September 2008, with the support of Cork City Council as a pilot scheme. Cork City Council gave GoCar use of 3 car parking locations in Cork City as part of a wider pilot scheme.
Peak car is a hypothesis that motor vehicle distance traveled per capita, predominantly by private car, has peaked and will now fall in a sustained manner. The theory was developed as an alternative to the prevailing market saturation model, which suggested that car use would saturate and then remain reasonably constant, or to GDP-based theories which predict that traffic will increase again as the economy improves, linking recent traffic reductions to the Great Recession of 2008.
Robert Cervero is an author, consultant, and educator in sustainable transportation policy and planning. During his years as a faculty member in city and regional planning at the University of California, Berkeley, he gained recognition for his work in the sphere of urban transportation and land-use planning. His research has spanned the topics of induced demand, transit-oriented development (TOD), transit villages, paratransit, car sharing, and suburban growth.
The following outline is provided as a topical guide to transportation planning.
References
- 1 2 Marchetti, C. (September 1994). "Anthropological invariants in travel behavior" (PDF). Technological Forecasting and Social Change. 47 (1): 75–88. doi:10.1016/0040-1625(94)90041-8.
- ↑ Meyer, Perrin S.; Marchetti, Cesare; Ausubel, Jesse H. (May 1998). "Toward green mobility: the evolution of transport". European Review . 6 (2): 137–156. doi:10.1017/S1062798700003185. ISSN 1474-0575. S2CID 144530976.
- ↑ Ausubel, Jesse H.; Marchetti, Cesare (April 2001). "The Evolution of Transport". The Industrial Physicist. Vol. 7, no. 2. pp. 20–24. Retrieved 5 February 2019.
- ↑ Mumford, Lewis (1934). Technics and Civilization .
- 1 2 Metz, David (2008). The Limits to Travel: How Far Will You Go?. Earthscan. ISBN 9781844074938.
- ↑ Crozet, Yves (19–21 April 2009). "Economic Development and the Role of Travel time: The key concept of accessibility". Commissioned Papers for the 4th International Future Urban Transport Conference of the Volvo Research and Educational Foundations. Gothenburg, Sweden.
- ↑ Cervero, Robert (2011). Going beyond travel-time savings: an expanded framework for evaluating urban transport projects (Report). Washington, DC: World Bank (published 27 June 2012). Report Number 70206. Retrieved 5 February 2019. PDF
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