DSB IC3 (MF Litra)

Updated: August 2026 – There are vehicles you spend ages studying axle counts and windscreens for. And there is the IC3. Its rubber-nose front is so unusual that it doesn’t occur a second time anywhere in Europe – and it isn’t styling, but one of the most elegant engineering solutions in European multiple-unit design. This page explains what’s behind it and how you tell the IC3 apart from its close relatives.

What is the DSB IC3?

The DSB IC3 is a three-car diesel multiple unit of the Danish state railway DSB with the Litra designation MF. It dates from the late 1980s, is designed for 180 km/h and runs on three car bodies carried by only four bogies – the middle bogies each carry two neighbouring carriages.

But it became famous not for these figures, but for its front. Instead of a nose flap, a large, elastic rubber bellows runs right round the whole front end. When two units are coupled, the bellows press against each other and seal the joint. The driving cab, which sits centrally on this train, folds away – and for passengers, two trains become a single, continuously walk-through train.

The features that are enough to identify it

For how to work through such chains of features systematically instead of guessing from the overall impression, see the guide to identifying rolling-stock classes.

Which Danish bellows front is that?

The family is manageable in size, but its members look very alike. The finder below narrows it down using three observations.

The individual pages: DSB IR4 for the electric variant and DSB IC4 for the four-car diesel successor.

Why Denmark of all places built this train

The IC3 is no accidental product, but the logical answer to three Danish constraints.

Starting point	Consequence for the vehicle	What you see in service
Large parts of the network without overhead line	Diesel propulsion instead of catenary	no pantograph, engine noise when moving off
Train portions to be split en route	Coupling and splitting has to be quick	often two or three coupled units
Passengers should be able to use the whole train	walk-through gangway between the units	rubber bellows instead of nose flap, central driving cab
Short platforms on secondary lines	compact, three-car units	three car bodies on only four bogies

The third row in particular rewards a second look. A walk-through gangway between two independent trains is technically demanding: the connection has to be sealed, has to absorb movement while running, and has to open again without residue when the units are split. The bellows solution achieves this without elaborate concertina bellows and without flaps that could ice up in winter – an advantage not to be underestimated in a country with a raw coastal climate. That the driving cab has to move to the middle of the vehicle and be made movable was the price of this solution; in service the effort has clearly paid off, since the concept survived several vehicle generations.

This combination also explains why the train still feels so distinctive today. It is the most consistent execution of the Danish diesel-multiple-unit tradition, which grew out of the state of electrification in the network run by Banedanmark. The previous generation of this line can be found on the page about the DSB MR / MRD.

Observation and photography

How to record such observations so they’re still usable years later is described in the guide to keeping a sighting logbook. The basic photographic technique is covered in the guide to taking good photos of trains.

Common mix-ups

Verdict

The IC3 is one of the few vehicles where a single glance is enough. The rubber-nose front is unmistakable, permanent and recognisable from a great distance – the kind of identifying feature spotters would wish for on every class. The train stays interesting all the same, because its surroundings keep changing: electrification, new vehicles and shifting services constantly move where it still runs. That’s exactly why it’s worth recording every sighting with number, location and date.