Dual-mode bus

This article concerns buses that can operate from two independent fuel sources. For other hybrid technologies, see Hybrid bus or Fuel cell bus

Boston Neoplan AN460LF dual-mode trolleybus, operating in diesel mode (with its trolley poles lowered)

A dual-mode bus is a bus that can run independently on power from two different sources, typically electricity from overhead lines (in a similar way to trolleybuses) or batteries, alternated with conventional fossil fuel (generally diesel fuel).

In contrast to other hybrid buses, dual-mode buses can run forever exclusively on their electric power source (wires). Several of the examples listed below involve the use of dual-mode buses to travel through a tunnel on electric overhead power.

Many modern trolleybuses are equipped with auxiliary propulsion systems, either using a small diesel engine or battery power, allowing movement away from the overhead wires, called "off-wire" movement, but such vehicles are generally not considered to be dual-mode buses if their off-wire capability is very limited. Examples include the fleet of about 300 trolleybuses in San Francisco^[1] and the trolleybuses used on a 2005-opened system in Rome, Italy,^[2] which are capable of running on battery power only for short distances or short periods of time before needing recharging. The Rome vehicles are powered from overhead trolley wires over most of the 11.5-km route and only use battery power on the 500-metre section closest to the city centre.^[2]

Examples

This transport-related list is incomplete; you can help by expanding it.

• Bergen, Norway features dual-mode MAN-Neoplan buses in the Bergen trolleybus system
• Boston, Massachusetts, USA installed dual-mode Neoplan buses on the Waterfront portion of its Silver Line in 2005. Electric power is required in the exclusive right of way that runs in a tunnel under Fort Point Channel to South Station; diesel power is used to run on city streets and highways, including the Ted Williams Tunnel to Logan Airport
• Castellón de la Plana, Spain installed a new trolleybus line that went into operation 25 June 2008.^[3][4] The Irisbus Civis vehicles are optically guided and are capable of switching to diesel engine power for turning in front of the Parque Ribalta.^[5][6]
• Seattle, Washington, USA used 236 dual-mode Breda ETB buses in its downtown bus tunnel from 1990 until late 2004, when the fleet of dual-mode buses were retired, except for 59 converted to electric-only service^[7][8] and were replaced in the tunnel by hybrid diesel-electric buses.

See also

• Diesel-electric transmission
• Dual-mode vehicle
• Electric bus
• List of buses

References

1. ^ "About Trolley Buses". San Francisco MTA. http://www.sfmta.com/cms/mfleet/trolley.htm. Retrieved 2009-12-15. 
2. ^ ^{a b} Webb, Mary (ed.) (2009). Jane's Urban Transport Systems 2009-2010, p. 195. Coulsdon (UK): Jane's Information Group. ISBN 978-0-7106-2903-6.
3. ^ Dave Chick. "Castellon". British Trolleybus Society. http://www.sandtoft.org/bts/Articles/castellon.htm. Retrieved 2009-01-10. ^{[dead link]}
4. ^ "Castellón-de-la-Playa (sic) Trolleybus Photos". http://members.shaw.ca/synt/Castellon-photos.htm. Retrieved 2009-01-10. 
5. ^ "A First in Spain: Optiguide for Castellon’s Trolleybus Line". http://www.innovations-report.com/html/reports/logistics/report-113808.html. Retrieved 2009-01-11. 
6. ^ "Castellón de la playa notes". http://members.shaw.ca/synt/Castellon-Notes.htm. Retrieved 2009-01-10. 
7. ^ "Retired - Breda 5000 dual mode bus". http://metro.kingcounty.gov/am/vehicles/retired/breda.html. Retrieved 2009-12-04. 
8. ^ "Breda Articulated Trolley Bus". http://metro.kingcounty.gov/am/vehicles/breda-trolley.html. Retrieved 2009-12-04. 

This bus-related article is a stub. You can help Wikipedia by expanding it.v · Categories: Types of buses Bus stubs Wikimedia Foundation. 2010. Игры ⚽ Нужна курсовая? List of Russian foreign ministers Kawasaki GPZ900R Look at other dictionaries: Dual-mode vehicle — For other types of Hybrid Transportation , see Hybrid vehicle. See also Global Hybrid Cooperation for the General Motors/DaimlerChrysler/BMW hybrid vehicle technology often called Dual Mode A dual mode vehicle is a vehicle that can run on… …   Wikipedia Dual-mode transit — JR Hokkaido DMV tested. Dual mode transit describes transportation systems in which vehicles operate on both public roads and on a guideway; thus using two modes of transport. In a typical dual mode transit system, private vehicles comparable to… …   Wikipedia Bus — This article is about Road vehicles designed to carry passengers. For longer distance passenger vehicles, see Coach (vehicle). For other uses, see Bus (disambiguation). An Arriva double decker bus, running route 102 on the London Buses network …   Wikipedia Bus rapid transit — ( BRT ) is a broad term given to a variety of transportation systems that, through improvements to infrastructure, vehicles and scheduling, attempt to use buses to provide a service that is of a higher quality than an ordinary bus line. Each BRT… …   Wikipedia Mode of transport — Part of a series on Transport Modes …   Wikipedia School bus — This article is about vehicles specifically designed and manufactured for carrying students to and from school. For information about school transportation in general, see student transport. School Bus Front 3/4 view of a typical North American… …   Wikipedia Guided bus — A bus on the O Bahn Busway route in Adelaide, Australia …   Wikipedia Transit bus — Urban bus route No. 1007 in Busan City Hall, Busan, South Korea. The model is Hyundai Universe Space Elegance …   Wikipedia Hybrid electric bus — An Eletra hybrid bus in São Paulo, Brazil …   Wikipedia Dual-channel architecture — describes a technology that theoretically doubles data throughput from RAM to the memory controller. Dual channel enabled memory controllers utilize two 64 bit data channels, resulting in a total bandwidth of 128 bits, to move data from RAM to… …   Wikipedia 18+ © Academic, 2000-2024 Contact us: Technical Support, Advertising Dictionaries export, created on PHP, Joomla, Drupal, WordPress, MODx. Mark and share Search through all dictionaries Translate… Search Internet Share the article and excerpts Direct link … Do a right-click on the link above and select “Copy Link”