Class 455

Updated: August 2026 – Class 455 is one of those numbers where the most honest sentence is: there’s no broad, verified everyday knowledge about it. What there is, however, is a numbering system with clear rules – and that carries further than you’d think. This page shows you how the 4xx block is structured, why the timing of a sighting is itself part of the information, and how to cleanly document an electric traction vehicle in the field.

What’s behind Class 455?

Class 455 belongs to the German class block 4xx, assigned to electric power cars, intermediate cars and driving trailers. Its UIC type code is 94 and stands Europe-wide for electric multiple units and railcars. That clearly settles the vehicle type.

It doesn’t, however, belong to a specific, broadly documented fleet – at least not in a form that could seriously be stated here with years built, quantities or power figures. Such claims would only fake certainty. What helps instead is understanding how the numbering block works, so you can place any vehicle you come across.

The 4xx block grew, it wasn’t designed

The German class scheme isn’t a system drafted on a drawing board, but one extended over decades. For the 4xx range that means three things worth knowing:

• Numbers are allocated sequentially. They aren’t sorted by manufacturer or vehicle type. Two neighbouring numbers can refer to completely different vehicles.
• The block has been reworked several times. Older designation systems were folded into today’s scheme, shifting assignments along the way.
• Numbers that become free can be reassigned. That’s why a number without a time reference is only partly unambiguous.

From this follows a rule many people underestimate: every sighting needs a date. Not because the date identifies the vehicle, but because it anchors the assignment in the right time context.

What you can actually check in the field

The basic sequence for identifying a class is described in the guide to identifying classes; how the twelve-digit number is structured and what the check digit does is covered in the piece on the UIC number.

Which figures hold up, and which don’t

This overview separates stable information from changeable information. It applies to every class, but for rarely documented numbers it decides between usable and unusable.

Figure	Where it comes from	Durability	For the sighting
UIC type code (94)	vehicle number, first two digits	permanent	always note it
Class portion (455)	vehicle number	very long-term stable	read in full
Serial number	vehicle number	permanent per vehicle	identifies the unit
Design features	your own observation	permanent	car count, current collection, gangways
Keeper and markings	markings on the vehicle	changes over the medium term	note with a date
Livery, line, network	appearance	changes short-term	only meaningful with a date

The lower half of the table is why a well-kept photo archive is worth so much for rare classes: it preserves exactly the information that can no longer be reconstructed later. How to build such an archive and keep it searchable is covered in the guide to building a photo archive for spotters.

For comparison, it’s worth looking at well-documented neighbours in the same block, such as Class 420 / 421. There you can see what a fully described class looks like – and how much of that is missing for the 455.

This comparison is more than a footnote. It shows that the quality of a class description doesn’t depend on the vehicle, but on the state of the sources. Large series for regular and S-Bahn service have been observed, photographed and described in specialist literature for decades; small fleets, conversions and edge cases haven’t. Keeping that in mind changes how you read overviews: a gap then isn’t a hint at a mysterious vehicle, simply a hint that nobody’s done the work. That’s exactly the gap you can partly close with a cleanly documented sighting of your own – provided you back it up rather than fill it in.

Safety at the track

Searching for unusual vehicles in particular leads people to places they have no business being. So, without qualification:

• Stay behind the safety line. It marks the area an entering vehicle claims along with its slipstream.
• Track areas, operational installations and storage sidings are off limits. That applies regardless of whether there’s currently any activity, and regardless of how accessible an area looks.
• Side-mounted conductor rails are lethal. In DC networks, the rail beside the track is permanently live. It’s barely recognisable as a danger from the outside.
• Don’t flash towards the driving cab. Dazzling the driver is a direct hazard to operations.

Legal questions about access and distance always depend on the individual case and local rules. If in doubt, stay on publicly accessible platform areas and follow staff instructions.

Common mix-ups

Related numbers from the same block can be found on the pages for Class 450 and Class 452 – there too the system takes centre stage, not the claim.

Conclusion

Class 455 is a number that shows the limits of publicly verified knowledge. That’s not a reason to invent figures, but one to work cleanly: type code 94 as the most stable information, a sequentially allocated 4xx block with no sorting logic, a date on every sighting and a photo backing up the number. Working this way produces data that still holds up even when assignments change.