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| PRT Systems | |
|---|---|
| Name | PRT Systems |
| Type | Mass transit |
PRT Systems
PRT Systems are automated, small-vehicle transit networks designed to provide on-demand point-to-point service using dedicated guideways. They occupy a niche between tramways, light rail, monorails, and taxi services, aiming to combine the privacy of car travel with the throughput of rapid transit. Developed through collaborations among manufacturers, municipal planners, and research institutions, PRT Systems have been proposed for airports, campuses, and urban centers.
PRT Systems consist of automated podcars operating on segregated guideways, enabling flexible routing and reduced station dwell compared with bus services and subway systems. Proponents compare PRT to people movers, guided busways, and autonomous vehicle concepts developed by corporations and universities. Critics evaluate PRT against established networks such as New York City Subway, London Underground, and Paris Métro for capacity and integration.
Early conceptual work on automated personal conveyances emerged alongside projects at Massachusetts Institute of Technology, General Motors, and research programs funded by agencies like NASA and United States Department of Transportation. Prototype demonstrations drew on innovations from firms such as Westinghouse Electric Corporation and Otis Worldwide, with commercial efforts led by companies including Morgantown Personal Rapid Transit Authority contractors and private firms competing in the 1970s and 1980s. Notable deployments were influenced by urban redevelopment initiatives in cities like Vancouver, Cambridge, and Paradise tied to airport expansion programs. Academic analyses appeared in journals associated with Institute of Electrical and Electronics Engineers and conferences hosted by Transportation Research Board.
PRT Systems integrate vehicle automation, real-time control, and guideway engineering drawing on technologies developed for automated guideway transit and maglev research. Control systems often implement algorithms from work at Carnegie Mellon University, Stanford University, and Imperial College London to manage platooning, headway, and switching. Power and communications standards reference work by International Electrotechnical Commission and Institute of Electrical and Electronics Engineers. Operational modes borrow scheduling concepts from air traffic control and dispatch systems used by railway operators such as Deutsche Bahn and JR East.
PRT configurations vary by vehicle design, propulsion, and guideway type: rubber-tyred pods on concrete guideways, steel-wheel vehicles on elevated tracks, or magnetic-levitation variants inspired by JR Central and Transrapid research. Core components include stations with off-line berths influenced by designs used in airport people mover terminals, switching mechanisms similar to those in monorail installations, and centralized control centers modeled after railway signalling rooms at operators like Transport for London and SNCF. Vehicle subsystems draw on battery and power-electronics advances from manufacturers such as Siemens, ABB, and General Electric.
Advocates cite reduced dwell times, privacy comparable to taxicab service, and potential energy efficiency paralleling innovations by Tesla, Inc. and Nissan Motor Company. PRT proponents reference case comparisons with bus rapid transit corridors in cities like Bogotá and Guangzhou for right-of-way benefits. Limitations include constrained throughput relative to high-capacity corridors served by Shinkansen, TGV, and Intercity Express services, high capital costs highlighted in studies by World Bank and Organisation for Economic Co-operation and Development, and complexity in regulatory approval processes similar to those navigated by autonomous vehicle suppliers and airline certification bodies.
Small-scale implementations and pilot projects have occurred at institutions and municipalities that include West Virginia University's Morgantown system, airport people movers at hubs like Minneapolis–Saint Paul International Airport and Seattle–Tacoma International Airport, and demonstration pods at exposition sites similar to installations at Expo 67 and Expo 86. Private developments have been proposed for urban redevelopment projects in locales such as Masdar City and Songdo. Comparative studies reference ridership and lifecycle assessments performed by agencies including Federal Transit Administration and research groups at University of California, Berkeley.
Safety frameworks for PRT Systems draw from standards and regulatory regimes established by bodies like International Organization for Standardization, European Union Agency for Railways, and national agencies such as Federal Aviation Administration for automated systems guidance and National Transportation Safety Board for incident investigation protocols. Certification approaches mirror those used by rail and automotive regulators and often involve collaboration with insurance underwriters and occupational authorities from cities like Singapore and Tokyo. Industry groups and standards committees convene stakeholders including manufacturers, operators, and academic partners to adapt standards from IEEE and ISO to address emergency evacuation, cybersecurity, and system resilience.
Category:Automated transit Category:Light rail alternatives