ÖBB Class 1042

Updated: August 2026 – Four-axle, boxy, ahead of every conceivable type of train: the Class 1042 was the workhorse of Austria’s main lines for decades. This page shows you how to identify it, what the designation 1042.5 means, and how to tell it apart from the closely related Class 1142.

What is the Class 1042?

The Class 1042 is a four-axle general-purpose electric locomotive of the ÖBB, first built from 1963. It works under 15 kV at 16.7 Hz, has the wheel arrangement Bo’Bo’ – two two-axle bogies with drive on every axle – and was deliberately designed to handle both passenger trains and freight trains.

This very general-purpose remit explains its long presence in Austrian operations. Where other countries ran specialised classes for passenger and freight traffic side by side, the 1042 covered both. For spotters, that has an important consequence: the train behind the locomotive barely helps with identification. You have to be able to read the locomotive itself.

Understanding the Austrian class scheme

If you’re coming from Germany, you should first get your head around the designation system, because it differs fundamentally from the DB’s three-digit Baureihe scheme.

The same information turns up again in the twelve-digit European number: 91 as the type code for electric locomotives, 81 as the country code for Austria. How this numbering system is put together overall is explained in the guide to reading the UIC number.

What makes a general-purpose locomotive

The term general-purpose locomotive sounds like marketing, but it describes a real design decision. A locomotive for freight trains needs high starting tractive effort and a rugged build, while a locomotive for passenger trains needs speed and a smooth ride. Achieving both at once demands compromises – and those compromises define the design.

For the Class 1042, the compromise falls in favour of versatility. Four powered axles deliver enough tractive effort for everyday duties without making the locomotive as heavy and long as a six-axle mountain engine. The gearing allows speeds sufficient for passenger trains on main lines without sacrificing tractive effort at the lower end.

Economically, that’s a strong argument. A railway that can use a single class for almost every task needs fewer vehicle types, smaller spare-parts stocks and less specialised training for staff. Diagrams can be planned more flexibly, because every available engine suits almost every working. This is exactly why this class was so ubiquitous for decades.

For observers, that has a direct consequence: context helps with identification far less than it does with specialised classes. Someone spotting a freight locomotive in Germany can often already narrow down the possible classes from the train itself. That reasoning doesn’t work with an Austrian general-purpose locomotive. What’s left is the direct route: count the axles, judge the generation, read the number.

The 1042 family at a glance

The closely related four-axle classes of the ÖBB are by far the most common source of confusion. This overview places them.

Class	Origin	Distinguishing feature
1042	basic design from 1963	four-axle general-purpose engine for passenger and freight trains
1042.5	later build series of the same class	designed for higher speeds
1142	emerged from the 1042.5 build series	upgraded for push-pull operation
1141	older four-axle design line of the ÖBB	its own class, not derived from the 1042
1044	newer generation of four-axle electrics	more powerful design with different styling

The direct successor design within the same family is the Class 1142. Built quite differently but likewise four-axle is the Class 1141. The newer generation is represented by the ÖBB Class 1044, which stands out at first glance thanks to its styling.

Spotting and photography

The Class 1042 is one of those vehicles whose chances get slimmer every year. Deployment in regular service has declined sharply over time, and individual engines have gone to other operators or are being preserved by societies such as ÖGEG. Another place to look for preserved Austrian traction vehicles is the Strasshof Railway Museum. Exactly where keeps changing – current sightings from the community are far more reliable here than older fleet lists.

For this class there’s a particular note for documentation: because the sub-classes and the related Class 1142 are barely distinguishable from the outside, the full number belongs in every sighting without exception. How to build a sighting archive so that details like this stay findable later is described in the guide to the sighting log. The general order for identification is given in the guide to identifying locomotive classes.

Common mix-ups

Conclusion

The Class 1042 is the way into the Austrian class scheme. Once you’ve identified it properly, you understand the logic behind it: a four-digit number, a leading 1 for electric locomotive, a decimal point for the sub-class. The design gives away the era, the number gives away the vehicle. And because its deployment is declining, every documented sighting is worth more today than it was twenty years ago.