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The Siemens SD660, originally known as the Siemens SD600, is a double-articulated, 70%-low-floor
* Bridgeplate wheelchair ramps. These are located at two of the four doorways on each side of an LRV, the two closest to the car's center.
* Bi-directional (or "double-ended"), with operating cabs at both ends
light rail
Light rail (or light rail transit, abbreviated to LRT) is a form of passenger urban rail transit that uses rolling stock derived from tram technology National Conference of the Transportation Research Board while also having some features from ...
vehicle (LRV) manufactured by Siemens Transportation Systems. It was the first low-floor light rail vehicle to be used in the United States. It first entered service in 1997 with its only operator, TriMet
The Tri-County Metropolitan Transportation District of Oregon (TriMet) is a Transit district, transit agency that serves most of the Oregon part of the Portland metropolitan area. Created in 1969 by the Oregon Legislative Assembly, Oregon legi ...
, on the MAX
Max or MAX may refer to:
Animals
* Max (American dog) (1983–2013), at one time purported to be the world's oldest living dog
* Max (British dog), the first pet dog to win the PDSA Order of Merit (animal equivalent of the OBE)
* Max (gorilla) ...
light rail system in Portland, Oregon
Portland ( ) is the List of cities in Oregon, most populous city in the U.S. state of Oregon, located in the Pacific Northwest region. Situated close to northwest Oregon at the confluence of the Willamette River, Willamette and Columbia River, ...
, United States.
History
The initial order placed by TriMet in May 1993 was for 39 cars. It was the first order for low-floor light rail vehicles (LRVs) in North America. The order was subsequently expanded to 46 cars and ultimately to 52. TriMet received the first car, which it numbered 201, in July 1996, and the first nine cars entered service on August 31, 1997. Siemens retroactively changed the car's model designation from SD600 to SD660, a change relating to its use ofAC motor
An AC motor is an electric motor driven by an alternating current (AC). The AC motor commonly consists of two basic parts, an outside stator having coils supplied with alternating current to produce a rotating magnetic field, and an inside roto ...
s running on 60 Hz instead of DC ones, in 1998. The 52nd car was received by TriMet in April 2000.
TriMet later purchased 27 more SD660s (initially 17 cars, with another 10 added to the order in 2002), which were built between 2003 and 2005. TriMet designated these "Type 3" in its fleet and numbered them 301–327. The last car was delivered in March 2005.
All 79 SD660 cars were originally equipped with rollsign-type destination sign
A destination sign (North American English) or destination indicator/destination blind (British English) is a sign mounted on the front, side or rear of a public transport vehicle, such as a bus, tram/streetcar or light rail vehicle, that di ...
s. TriMet replaced the original signs with LED-type signs in a two-year conversion program that lasted from fall 2014"Worldwide Review". '' Tramways & Urban Transit'', March 2015, p. 121. UK: LRTA Publishing. to August 2016."Worldwide Review". '' Tramways & Urban Transit'', November 2016, p. 440. UK: LRTA Publishing.
Features
* Bridgeplate wheelchair ramps. These are located at two of the four doorways on each side of an LRV, the two closest to the car's center.
* Bi-directional (or "double-ended"), with operating cabs at both ends
See also
Other Siemens light rail vehicles for the American market: * Siemens–Duewag U2 – high-floor LRV for either level boarding at high-platform stations or steps for passenger loading at street level * SD-100 and SD-160 – high-floor LRV for either level boarding at high-platform stations or steps for passenger loading at street level * SD-400 and SD-460 – high-floor LRV for both level boarding at high-platform stations and with steps for passenger loading at street level * P2000 – high-floor LRV for level boarding at high-platform stations, custom built for Los Angeles * S700 and S70 – low-floor LRV for passenger loading at street level * S200 – high-floor LRV for level boarding at high-platform stationsReferences
External links
* {{Siemens trams and light rail vehicles Light rail vehicles Siemens tram vehicles Electric multiple units of the United States MAX Light Rail Train-related introductions in 1996 750 V DC multiple units