Breda ADPB 350

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Breda ADPB 350
King County Metro Transit 4233-a.jpg
Years of manufacture 1988 to 1991
Length 61 feet
Width 102 inches

The Breda ADPB 350 is a type of articulated trolleybus built for the King County Metro. Breda Costruzioni Ferroviarie was successful in bidding for the 236-unit bus order that would operate in the Downtown Seattle Transit Tunnel. In addition to operating on overhead electricity, the ADPB 350 can operate with a conventional diesel powertrain off-wire and outside the tunnel. The diesel powertrain drives the rear axle, while the electric motor drives the middle.

Three prototypes were delivered in 1988 for testing and troubleshooting. Enough buses were delivered in time for the opening on the tunnel in September 1990. Deliveries continued into 1991. Between 2004 and 2006, 59 of these buses were converted to electric-only. They were also refurbished with new current collection equipment, new interiors, and LED destination signs. The last revenue trip with a bus operating under dual power was on January 24, 2005.[1]

Specifications

Measurements

  • Length: 61.2'
  • Width: 102"
  • Height: 146.4"

Engine

Transmission

Traction motor

  • Fuji Westinghouse

Suspenssion

  • Air

Brakes

  • Bendix S-cam

Operators

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references