NGT8D

The NGT8D is an eight-axle low-floor articulated railcar from the first German low-floor generation. The type designation tells you more than any spec sheet.

Also known as: NGT 8 D · Niederflurgelenktriebwagen NGT8D

GermanyGermanyElectric multiple units8 min readUpdated: August 2026

8

axles per the type designation

94

type code for electric traction vehicles

BOStrab

governing operating regulation

Key takeaways

  • The digit names the axle count: an NGT8D has eight axles – how many car sections that becomes depends on the design.
  • The N stands for low-floor: the NGT8D belongs to the first generation of trams with low entry.
  • The letter at the end is the type code and separates network variants – D, DD, G and others denote different fitments.
  • No UIC number: trams run under BOStrab and carry an operator's own car number, not the railway's twelve-digit number.
  • Fleet and deployment change with procurements and network rebuilds – check the current picture before a trip.
Contents
  1. 1.What is the NGT8D?
  2. 2.The type designation is a build manual
  3. 3.Axle count beats estimating length
  4. 4.Photographing in the street
  5. 5.Common mix-ups
  6. 6.Documenting numbers correctly
  7. 7.Conclusion

Fact file

Vehicle typeLow-floor articulated railcar for tram operation
Type designationN = low-floor, GT = articulated railcar, 8 = axle count, D = type code
Axle countEight axles
Vehicle generationFirst low-floor generation of German trams (1990s)
Operating environmentUrban tram network under BOStrab, mainly Magdeburg
Numbering systemOperator's own car number, not a twelve-digit UIC number

Identifying features

Is this really the class in front of you?

Tick off everything that applies to the vehicle you are looking at.

  • Eight axles – that's the number in the type designation, not the number of car sections
  • Multi-section car body with joints and bellows gangways between the segments
  • Low entry throughout, with no high steps at the doors
  • Angular car body styling from the 1990s, no rounded plastic front mask
  • Operator's own car number on the front and rear instead of a twelve-digit vehicle number
  • Contact via a single-arm pantograph, DC network of a tram

Updated: August 2026 – Eight-axle articulated car, low entry, angular 1990s styling: the NGT8D belongs to the vehicles where the type name already does half the identification for you. This page shows you how to read the designation, what you can count on the vehicle, and how to tell it apart from related types.

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What is the NGT8D?

The NGT8D is an eight-axle low-floor articulated railcar for tram operation, procured for the Magdeburg network. It belongs to the vehicle generation with which German tram operators switched from high-floor cars with steps to step-free entry in the 1990s.

That changeover was the real break in German tram history – more demanding technically than any model change before it. Instead of classic bogies with continuous axle shafts, short running gear units were used so the vehicle floor could sit low between them. That’s exactly where the characteristic silhouette comes from: many short car segments, joints with bellows gangways, and a window band that sits visibly higher over the running gear. Because hardly any operator develops such vehicles entirely in-house, the electrical equipment comes from suppliers such as Kiepe Electric. The same goes for brake technology – there, Hanning & Kahl is one of the best-known names.

The type designation is a build manual

Unlike railway classes such as the Class 425 / 426 / 435, whose number is assigned purely administratively, the tram type name describes the vehicle directly.

N – low-floor

Marks the generation with a lowered vehicle floor. If the N is missing, you're dealing with an older high-floor vehicle.

GT – articulated railcar

Several car bodies connected by joints with a bellows gangway. Not a train formation of separate cars, but a fixed unit.

8 – the axle count

Not the number of car sections. Count the wheelsets on one side of the vehicle: eight axles means eight wheelsets over the entire length.

D – the type variant

The letter at the end separates the fitments of different operators. DD, G and other codes denote closely related but not identical vehicles.

Once you’ve taken these four building blocks on board, you can classify almost any German low-floor tram of this generation from its name alone. The general method behind it – rough features first, then details, then the number – is set out in the guide to identifying rolling-stock classes.

Axle count beats estimating length

The most common source of error when identifying articulated cars is estimating length. From an angle, a six-axle car looks almost as long as an eight-axle one. The axle count, on the other hand, is objective – and countable from any angle where you can see the running gear.

Feature What you count Why it helps
Axles Wheelsets on one side of the vehicle Stated directly in the type designation
Bellows gangways Transitions between the segments Gives the number of car sections
Doors per side Entries including the driver’s door Separates short from long types
Entry height Step present or not Separates the low-floor from the high-floor generation
Pantograph Number and position on the roof Shows which segment is the leading one

A rule of thumb for the first glance

Count axles first, then bellows gangways, then read the car number. In this order you'll reach a result even if the tram only stops briefly at the platform.

Applying the same principle to older vehicles quickly leads to Tatra types such as the Tatra KT4D – there, the KT stands for short articulated railcar, and once again the digit describes the axle count.

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Photographing in the street

Trams are photographed differently from railway vehicles: the vehicles are shorter, come more often, and stop regularly. On the flip side, the background is full of cars, poles and overhead wiring.

Use the stop as a vantage point

At the stop the vehicle stands still, the car number is legible, and the doors show the entry situation. Ideal for identification, less so for an action shot.

Watch for overhead wiring in the background

Cross-span structures and poles cut across the vehicle in the picture. A lower vantage point and a longer crop untangle that.

Allow for the full vehicle length

An eight-axle articulated car is long. Stand too close, and you crop off segments – losing exactly the feature that defines the type.

Include the number in the frame

A photo without a legible car number is worth only half as much for documentation. Frame it so the front or rear is fully in shot.

The track area is off-limits

Even in the street, the rule holds: the track area is not a vantage point. Stay on the pavement, platform or traffic island and keep your safety distance from the platform edge. Trams run quietly, come from both directions and have a long braking distance. What applies legally and practically is set out in the article on the safety distance at the track.

For composition itself – panning, exposure time, perspective – the guide to good photos of trams is worthwhile. Which focal length is realistic in tight streets is covered by the guide on focal length for tram photography.

Common mix-ups

The dangerous mix-ups aren’t the exotic ones, but the obvious ones: vehicles from the same type family. Most common is confusion with the shorter NGT6D / MGT6D – there, only the axle count separates them. And with the Dresden types such as the NGT8DD, which implement the same basic idea but are tailored to a different network and therefore differ in car width and front-end shape.

It's likely an NGT8D if …

  • you count eight axles
  • entry is step-free from the platform
  • the car body has several joints with bellows gangways
  • the styling looks angular, not smoothly rounded

Take a closer look if …

  • you're unsure between six and eight axles – then the NGT6D also comes into question
  • the car looks noticeably wide – Dresden's DD types are their own type
  • the vehicle has been modernised and carries a new front end or livery

It's not an NGT8D if …

  • you see high steps at the doors – then it's a high-floor vehicle
  • several separate cars are coupled together instead of an articulated unit
  • the vehicle carries a twelve-digit UIC number – then it's a railway vehicle

Documenting numbers correctly

In this database, the NGT8D is listed under type code 94, which is reserved for electric traction vehicles in the railway’s twelve-digit numbering system. On the vehicle itself, though, you won’t find this number: trams run under BOStrab and carry an operator’s own car number that’s only unique within its own network. How the full railway numbering system is built and where the line between the two worlds runs is explained in the article on the UIC number and its check digit.

For practical purposes that means: always note the car number, date, line and location. Only that combination makes a sighting evaluable later on – especially when vehicles are modernised, repainted or withdrawn.

Conclusion

The NGT8D is a good training subject: its designation is self-explanatory, its features are countable, and telling it apart from neighbouring types comes down to a single observation. Anyone who keeps axle count, joints and entry height in view can correctly place the whole first low-floor generation.

In short

Eight axles, step-free entry, multi-section car body: that's the NGT8D. The digit in the name is the axle count – count it instead of estimating the length, and read the car number to confirm.

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Summary

  • The NGT8D is an eight-axle low-floor articulated railcar and belongs to the vehicle generation that made trams step-free in the 1990s.
  • Axle count, joint count and entry height are enough for identification – the car number confirms the result.
  • The main risk of confusion is with the related types NGT6D, MGT6D and Dresden's DD types.
  • How many vehicles are actually in circulation shifts constantly – new procurements gradually displace older types.

Frequently asked questions

What does the designation NGT8D mean?

It's a kit of parts: N stands for low-floor, GT for articulated railcar, the 8 for the axle count, and the letter D for the type variant. Unlike railway classes, the designation therefore carries a direct technical description – you can count it out on the vehicle.

How many car sections does an NGT8D have?

The type designation names the axle count, not the number of car sections. With eight-axle low-floor articulated cars, several layouts are possible, depending on how many running gear units sit under joints. So in the field, rely on what you can see: count the axles first, then the bellows gangways.

Does the NGT8D have a UIC number?

Usually not. The type code 94 for electric traction vehicles comes from the railway's twelve-digit numbering system. Trams run under BOStrab and carry an operator's own car number that's only unique within its own network. For sightings, that exact car number is the right identifier.

How do I tell the NGT8D apart from an NGT6D?

By the axle count. The NGT6D has six axles and is correspondingly shorter, the NGT8D eight. Count the wheelsets on one side rather than estimating the length – from an angle, both types look similarly long.

Is the NGT8D a low-floor vehicle over its entire length?

In the first low-floor generation, the low floor usually isn't continuous but limited to the areas between the running gear. Over the running gear there are often platforms or steps inside. From outside you can spot this at the lower edge of the windows, which sits higher over the running gear.

Where does the NGT8D run?

The type was procured for the Magdeburg tram operator. Which lines and duties it's actually run on changes with timetable revisions, engineering works and new procurements – check current sightings rather than old lists before a dedicated photo trip.

How do I recognise exactly which vehicle is in front of me?

By the car number, which on trams is usually fitted to the front, rear and interior. Together with date, line and location, that gives you a solid sighting – the type alone isn't enough for clean documentation.

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The rolling stock database is built from operational observation, community sightings and publicly available sources. Confirmed details are in the fact file; anything that can change is marked as such.

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