RegioJet AT GmbH

Updated: August 2026 – Two letters in the middle of a company name, and plenty of people already think they know where a company is registered, where it runs, and what it belongs to. RegioJet AT GmbH carries exactly such a suffix. This page shows what a country code in a company name actually says – and why it isn’t the same thing as the country code on the vehicle.

What is RegioJet AT GmbH?

RegioJet AT GmbH is a company registered in Austria in rail passenger services. Its company name is made up of three elements: “Regio” as a reference to passenger transport, “Jet” as a speed and comfort promise from marketing, and “AT” as a country tag. The legal form GmbH closes off the name.

The name stem RegioJet also appears in this database with a different country connection, for instance at RegioJet a.s.. A shared name stem is a hint, but not proof of a particular corporate link – this page asserts nothing further about it. In Austrian passenger services, among others, WESTbahn and ÖBB-Personenverkehr also operate.

The country suffix in the company name

A code like “AT”, “DE” or “CZ” in the middle of a company name is, first of all, simply part of the registered name. Corporate groups use such suffixes to make same-named companies distinguishable – in the register, in contracts and in correspondence. The suffix thus serves an organisational function, not a technical one.

Alongside that sits an entirely different level: the country code in the vehicle’s data panel. It names the country in which the vehicle is registered, and appears there directly before the keeper marking. In Austria that’s A-. This code follows a Europe-wide standardised procedure and only changes if the registration changes.

Both levels can name the same country. They don’t have to, and above all: one doesn’t prove the other. A company name is freely chosen; a vehicle registration is not.

Level	Where it appears	What it states	What it doesn’t state
Country suffix in the name	Corporate name, register, marketing	Membership of a name family	Country of vehicle registration
Country code in the data panel	On the side of the vehicle	Country of vehicle registration	Whereabouts or train operator
Vehicle keeper marking	Directly after the country code	Keeper of the vehicle	Who actually runs the train
Brand on the bodyside	Livery, lettering	Presentation to passengers	Ownership or corporate form
Legal form in the name	Corporate name	Legal constitution of the company	Size or significance

The row about the brand is the second most common pitfall. What’s on the bodyside speaks to passengers; what’s in the data panel speaks to railway operations. The lettering Regiojet on the bodyside is thus a brand presentation, not proof of the company behind it. How to get from an observation to a solid identification is described in the guide Who’s actually running it? Identifying railway operators.

Several operators on the same route

In the European rail market, several railway undertakings can use paths on the same route. On heavily used long-distance routes that leads to a picture many people don’t know from local services: two or three companies stand side by side in the timetable of the same relation, each with its own trains, its own vehicles and its own presentation.

For observers that’s remarkably convenient. At a single station on such a route you can collect several vehicle families, liveries and train formations within a few hours without changing location. Which operators actually run there, though, changes – with timetable changes, vehicle availability and business decisions. A lasting page can only describe the pattern, not the state of a particular day.

How to identify a passenger train in the field

How the twelve-digit number is structured and what each position means is explained in the guide to the UIC number.

The vehicle world in Austrian passenger services

Which vehicles run on a route is decided by the diagram and changes with procurements. For orientation, the vehicle world overall helps: the class database lists the loco-hauled ÖBB Railjet (RJ / RJX), the double-deck multiple unit Class 4110 (Stadler KISS), and the main-line locomotive ÖBB 1116 (Taurus).

These examples serve as identification aids for Austrian passenger services, not as a statement about the fleet of any particular company.

One pattern still helps at first glance: loco-hauled trains can be spotted by the clear separation of traction vehicle and coaches, multiple units by continuous gangways and uniform roof-mounted equipment across the whole unit. Neither says anything about the operator, but it narrows the vehicle family down enough that the following search for the number goes much faster.

Documenting passenger-service sightings

The guide to reporting sightings shows how to turn that into a clean report.

Common mix-ups

• Country suffix equated with country code – one appears in the company name, the other in the data panel on the vehicle.
• Country suffix equated with operating area – a name element says nothing about where trains actually run.
• Name stem equated with corporate structure – matching words in a name don’t prove ownership relationships.
• Brand equated with keeper – the lettering speaks to passengers, the data panel to railway operations.
• “Regio” equated with local services – the naming element is used by companies with very different services.

Conclusion

RegioJet AT GmbH is a textbook example of how much a company name seems to promise and how little it actually proves. Two letters place a company within a name family – nothing more. Everything that matters for a sighting is written a few metres further down, on the vehicle.