Whereas conventional stock consists of individual carriages resting on two
bogies each, in articulated trains consecutive cars rest on one shared bogie
connecting the two cars (LIREX and Copenhagen S-trains being an exception). In
articulated trains, cars are usually about 25% shorter.
Different realisations of articulated trains exist:
- Jakob-type bogies: Consecutive cars rest on a shared two-axle bogie.
- Single-axle bogies of the KERF type
- Talgo trains: consecutive cars rest on a single axle running gear located
between the two cars.
Figure 1 gives an overview.
The following evaluation refers to Jakob-type bogies being the most common
running gear for articulated trains. However, many statements are true for
articulated trains in general.
Figure 1: Different realisations of articulated trains
Source: IZT
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