dual-mode bus

As of 2007, the system consisted of six trolleybuses and two dual-mode buses.

As of 2009, the historic-vehicle fleet includes six trolleybuses, of which one is also a dual-mode bus.

Several of the examples listed below involve the use of dual-mode buses to travel through a tunnel on electric overhead power.

In contrast to other hybrid buses, dual-mode buses can run forever exclusively on their electric power source (wires).

As still not enough dual-mode buses were available, some rush-hour service was provided by CNG buses, with transfers at Silver Line Way.

The term railbus also refers to a dual-mode bus that can run on streets with rubber tires and on tracks with retractable HyRail train wheels.

For information on buses using a combination of internal combustion engines and electric propulsion, see Hybrid electric buses and Dual-mode buses.

It runs dual-mode buses, partly in a dedicated bus tunnel and partly on shared roadway, including surface streets, the Ted Williams Tunnel and airport roads.

Among the fleet of about 300 buses are 8 trolleybuses (two of them are dual-mode buses), making Bergen the only city in north-west Europe to have them.

For alternately powered buses, see dual-mode bus; for fuel cell hybrids see fuel cell bus; for all-electric buses, see electric bus.

The agreement with the Massachusetts Department of Environmental Protection had called for airport service by January, but the MBTA did not yet have enough dual-mode buses for full service.

Service through the trolleybus tunnel is by dual-mode buses, which operate electrically in the tunnel and within a short section on the surface, and which use diesel power for the rest of the route.

GLT is effectively a model of guided dual-mode bus, but when GLT vehicles use a pantograph to collect current, as do those in Caen, they are not commonly considered to be trolleybuses.

Additionally, the Silver Line Phase II uses dual-mode buses and until early 2006 also used some of the new Neoplan trackless trolleys pending the entry of the entire dual-mode fleet into service.

Originally constructed as a bus-only station by Metro and opened in 1990 for use by dual-mode buses/trolleybuses, it was rebuilt in 2005-2007 by Sound Transit for eventual use by light rail trains.

Until January 2006, it was also used for servicing, storage, and testing of new dual-mode buses and trolleybuses that the MBTA had purchased but not yet accepted into regular service; after 2006 the equipment was put into general service use.

King County Metro in Seattle, Washington and MBTA in Boston use or have used dual-mode buses that run on electric power from overhead wires on a fixed right-of-way and on diesel power on city streets.

The historic fleet consists of motor buses and trolley buses ranging from ones built in the late 1930s and early 1940s through to ones retired only recently, such as a Breda dual-mode bus, a type which was used for tunnel routes and replaced with hybrid electric buses.

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.

Phase II opened on Friday, December 17, 2004, with the first route (Silver Line Waterfront) running only to Silver Line Way, temporarily using new electric trolley buses borrowed from the trackless trolley routes that have their hub in Cambridge, as not enough dual-mode buses were available initially.

For other hybrid technologies, see Hybrid bus or Fuel cell bus 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).

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 and were replaced in the tunnel by hybrid diesel-electric buses.

In principle also trolleybuses or other non-autonomous electric buses or alternately powered buses such as fuel cell buses or dual-mode buses could be used for solar bus services, provided the origin of all or most of the energy used for propulsing the bus would be solar energy.