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A low-floor tram is a tram that has no steps between one or more entrances and part or all of the passenger cabin. The low-floor design improves the accessibility of the tram for the public, and also may provide larger windows and more airspace.<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref>

A low-floor tram allows accessible level access from curb level platforms. Level access can also be achieved either by using a high-floor vehicle serving high-platform stops. Currently both types are in use, depending on the station platform infrastructure in existing rail systems. Some systems may make use of former railway alignments where use of existing high platforms is desirable, while others, particularly new systems, may not have the space to site high-level platforms in urban centres.

Low-floor tram configurationsEdit

Template:Multiple image Trams traditionally had high floors, and articulated tram designs evolved with low-floor centre sections. Examples of this design are Amsterdam 11G/12G-trams and the Kusttrams in Belgium.

The most common design of 100% low floor vehiclesTemplate:Citation needed is the multi-articulated design. This uses short carbody sections for the wheels with longer sections between them. Examples of this are the Alstom Citadis and Combino. A different design was developed by MAN. In 1990 the GT6N was the first 100% low-floor tram. These trams are found in ten German cities (such as Bremen and Munich) and in the Swedish city Norrköping. Other designs are only partially low floor, with high floors over the bogies at the outer ends and single axle bogies under the low-floor centre section. North American light rail type vehicles frequently have a similar configuration but with a centre bogie designed to accommodate a low floor situated under a short centre section.

In Vienna, Ultra Low Floor (ULF) Trams can "kneel" at the curbside, reducing the height from the road to only Template:Cvt.

File:Protram205 ramp.JPG
Wheelchair access ramp in Protram 205 WrAs tram. Low floor is approximately Template:Cvt high

Some public transport companies have both low floor and high floor trams. They report that low floor trams have 15% higher maintenance costs for the rolling stock, and 20% higher maintenance costs for the infrastructure on average.<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref>

Many low-floor trams have fixed bogies<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}Template:Dead link</ref> which increase track wear and tear, while decreasing the speed at which a tram can drive through a curve (usually Template:Cvt in Template:Cvt radius curve).<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> The Škoda ForCity and the newest Alstom Citadis X04 try to counter the effect with pivoting bogies while maintaining 100% low floor design. Prior to the new design, pivoting bogies could only be used under high floors, hence such trams could only be part low-floor, with high-floor sections over the pivoting bogies.

Historic examplesEdit

File:BrisbaneSteplessTram301.JPG
Brisbane Hedley-Doyle Stepless tram, No. 301

The idea of a low-floor tram dates back to the early 20th century when a number of trolley systems began experimenting with various "stepless" designs. Perhaps the most notable is the Hedley-Doyle Stepless car introduced in 1912 for use on Broadway in Manhattan.<ref name="brillmagv6">Template:Cite journal</ref> A number of other cities also purchased Hedley-Doyle Stepless trams after seeing their success in Manhattan. Since these cars had a unique appearance compared to any other trams running at the time, they earned a number of nicknames, including hobble skirt cars, public welfare cars, and sow bellies.<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref>

Typical floor heightsEdit

Template:See also Typical floor heights of low-floor trams are Template:Cvt, and the Ultra Low Floor tram has a floor height of only Template:Cvt. For comparison high-floor trams are typically more than Template:Cvt and rapid transit using heavy rail trains has floor heights of Template:Cvt.

List of low-floor trams by country manufactured and manufacturersEdit

BelarusEdit

Belkommunmash

CanadaEdit

Bombardier Transportation

CroatiaEdit

Crotram

Czech RepublicEdit

ČKD Tatra
Aliance TW Team
File:Olšanská 4080.jpg
Tatra T3R.PLF (first car) in Prague
Škoda Transportation
Inekon Trams

FranceEdit

Alstom

GermanyEdit

Allgemeine Elektricitäts-Gesellschaft AG (AEG)
Duewag
MAN
  • Nuremberg N8S-NF (reconstruction with low-floor middle section)
Siemens
Adtranz

Stadler Pankow

ItalyEdit

AnsaldoBreda
Fiat Ferroviaria
Società Costruzioni Industriali Milano (Socimi)

JapanEdit

Template:Ill
Kinki Sharyo
Niigata Transys

PolandEdit

Konstal
Modertrans
  • Moderus Beta MF 01, MF 13, MF 14 AC BD, MF 18 (reconstruction with low-floor middle section)
  • Moderus Beta MF 02 AC, MF 15 AC, MF 16 AC BD, MF 19 AC (new trams with low-floor middle section)
Pesa
File:Pesa 122 NbT.jpg
Pesa Swing 122NbT in Toruń
Protram
Solaris Bus & Coach

RomaniaEdit

Astra Vagoane Călători
File:Astra Imperio Cluj 62.jpg
Astra imperio in cluj napoca
URAC Bucharest

Russian FederationEdit

PTMZ (Petěrburgskij tramvajno-mechaničeskij zavod)
UKVZ (Usť-Katavskij vagonstrojitělnyj zavod imeni Sergeje Mironoviče Kirova)
Uraltransmash
Tver Carriage Works (PC Transport Systems contract)

SpainEdit

Construcciones y Auxiliar de Ferrocarriles (CAF)
Vossloh España

SwitzerlandEdit

ABB
Stadler Rail

TurkeyEdit

Durmazlar
Bozankaya

UkraineEdit

Electrontrans
Tatra-Yug

Other tramsEdit

See alsoEdit

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ReferencesEdit

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External linksEdit