Key takeaways
- The name states the business area and self-image: freight as a service.
- How fast a freight train may run depends on its braking power – expressed as brake percentage (Bremshundertstel).
- Brake percentage is a ratio: the sum of the brake weights relative to the total weight of the train.
- The brake mode G, P or R is shown on every wagon and determines how the brake acts.
- Austrian vehicles carry A- in the data panel, just as German ones carry D-.
Contents
Fact file
| Business area | Rail freight |
|---|---|
| Legal form | GmbH – private limited company under Austrian law |
| Name components | “Cargo” for freight, “Serv” as short for service |
| Role on the network | Railway operator (railway undertaking) – runs trains, operates no infrastructure |
| Country code in the data panel | Vehicles registered in Austria carry the country code A- in front of the vehicle keeper marking |
How to recognise this operator
Is this really CargoServ GmbH?
- The company name combines Cargo and Serv – freight plus service
- Train made up of freight wagons, no passenger coaches
- Country code A- in front of the vehicle keeper marking on vehicles registered in Austria
- Brake mode markings and brake weights visible on every freight wagon
- Often groups of similar wagons rather than colourfully mixed trains
- Traction electric or diesel depending on the section – the loco says nothing about the wagon keeper
Updated: August 2026 – CargoServ GmbH carries its business area in its name: “Cargo” stands for freight, “Serv” for service. This page places the company, shows how to identify it in the field – and then explains a connection that affects every heavy freight train but is rarely explained: how fast a train may run depends on how well it can brake.
Spotted a freight train? Capture the formation too.
Loco, wagon types and location in one sighting – logged in seconds with Traintrack.
What is CargoServ GmbH?
CargoServ GmbH is an Austrian railway operator in freight. The company name combines two signals: the internationally common “Cargo” for freight and the short form “Serv” for service. The ending GmbH names the legal form under Austrian law.
As with every railway operator, the basic distinction applies here too: a railway operator (EVU) runs trains, an infrastructure manager (EIU) operates the infrastructure. Fleet, routes and clients, on the other hand, are changeable and don’t belong in a permanent profile, but in a dated sighting.
“Serv” in the company name
Name components such as "Service", "Serv" or "Solutions" are self-descriptions: they suggest that a company sees itself as a service provider for others. Nothing can be proven from this – but it's a useful hint that the work is done for third parties and not exclusively for the company's own needs.
Identification in the field
Determine the type of train
Freight wagons behind the loco? Then it's freight. Passenger coaches or railcars rule this business area out.
Read the country code
The country code stands in front of the vehicle keeper marking. Vehicles registered in Austria carry A-, those registered in Germany D-.
Note the vehicle number
Only the full number makes a sighting unambiguous – for loco and wagons separately.
Keep keeper and operator apart
The keeper marking names the keeper. The company running the train may be a different one.
The systematic path from vehicle to company is described in the guide Who’s actually running it? Identifying railway operators; the structure of the twelve-digit number block is covered in the guide to the UIC number.
Brake percentage: why braking power determines speed
This is the core explanation of this page. A freight train may not run as fast as the locomotive could pull it, but only as fast as the whole train can come to a safe stop. The calculation for this is called brake percentage (Bremshundertstel in German).
Every vehicle carries a marking with its brake weight – a figure for braking effect, not for mass. For a train, you add up the brake weights of all effectively braked vehicles and put the total in relation to the train’s total weight. The result, as a percentage, is the brake percentage. A high value means: a lot of braking effect relative to the mass.
This value is then compared with a braking table. It links three quantities with each other:
| Quantity | Effect on the permitted speed |
|---|---|
| Available brake percentage | the higher it is, the more speed is permitted |
| Gradient of the line | a steep falling gradient requires a higher brake percentage for the same speed |
| Desired speed | each step up requires additional braking power |
| Brake mode of the train | determines how quickly the braking force takes effect |
| Train length and mass | long, heavy trains reach lower values |
This leads to an everyday observation many people know: a very long, heavy freight train runs more slowly than a short, light one – not because the loco is weaker, but because the ratio of braking power to mass is less favourable. On lines with steep falling gradients, this relationship becomes even more pronounced.
Document train formations comparably
Log wagon types, length and location together – that's how observations turn into a data series.
G, P and R: the brake modes on the wagon
Besides the brake weight, every vehicle shows its brake mode. It describes not how strongly but how quickly braking takes place – and on many wagons it can be selected with a changeover lever.
Mode G is the goods train mode: the brake applies slowly and releases slowly. That’s necessary on long trains, because the drop in pressure in the brake pipe travels from front to rear. If the front wagons braked fully straight away while the rear ones were still rolling, considerable longitudinal forces would build up within the train.
Mode P acts faster and is designed for shorter trains and passenger trains. R denotes a fast-acting brake with additionally increased braking force, as needed for higher speeds. Which mode applies can be read on the vehicle – and when you’re watching, it explains why a freight train seems so much “softer” when stopping than a passenger train.
Vehicles in Austrian freight
In Austria, vehicle families are called a Reihe (class) and carry a four-digit number: 1xxx for electric locomotives, 2xxx for diesel locomotives, 4xxx for electric and 5xxx for diesel multiple units. For freight and shunting, the 1xxx and 2xxx classes are the most relevant.
Relevant pages in the class database are the versatile Class 1063, the diesel-powered Class 2143 and the Class 1116 (Taurus), designed for heavy main-line work. Which machine is at the head of a particular train is decided by the diagram. Comparable companies in the country include Rail Cargo Carrier Austria, Steiermarkbahn Transport und Logistik and LTE Logistik- und Transport-GmbH.
Recording freight sightings
Is your sighting complete?
- Full vehicle number of the loco including the check digit
- Country code and vehicle keeper marking noted separately
- Wagon types and approximate train length
- Location as precise as possible, date and time
- Direction of travel and position on the line
- Notable markings on individual wagons
Where freight is on the move right now is shown in the overview of the freight train radar.
Keep your distance, even from stationary trains
Shunting and stabling areas are operational railway land and off limits. Stationary freight trains can be propelled or pulled away without warning, and brakes release with considerable noise. Observe only from publicly accessible locations.
Common mix-ups
- Confusing brake weight with vehicle weight – brake weight is a figure for braking effect, not a statement of mass.
- Interpreting slow running as a fault – a low speed may simply follow from the available brake percentage.
- Equating brake mode with brake type – G, P and R describe the timing behaviour, not the design of the brake.
- Taking the livery as proof of the company – hired vehicles carry the design of their keeper.
- Merging keeper and operator – the two details belong in the sighting separately.
Verdict
CargoServ GmbH is clearly placed in freight by its name. If you watch such trains, you’ll gain the most by understanding why they run the way they do: it’s not tractive power that limits speed, but the ratio of braking power to mass.
In short
Brake percentage is a ratio, not a fixed property: brake weights divided by train weight. Together with the gradient and the brake mode, this determines how fast a freight train may run – and why heavy trains often seem slow.
Your freight archive grows with you
Number, keeper, train formation and location in one entry – and you can see what you're still missing.
Summary
- CargoServ GmbH is an Austrian railway operator in rail freight.
- The permitted speed of a freight train follows from the ratio of brake weight to train weight.
- Braking tables link this ratio to the gradient of the line and to speed.
- For sightings, what counts is the vehicle number, keeper marking, train formation, location and time.
Frequently asked questions
What does the name CargoServ reveal?
Two things. “Cargo” is the internationally used term for freight and clearly identifies the business area. “Serv” is short for service and points to a self-image as a service provider. The ending GmbH names the legal form. The name says nothing about fleet, routes or customers.
What is brake percentage?
A ratio. You add up the brake weights of all effectively braked vehicles in a train and put the total in relation to the train's total weight. The result is given as a percentage. The higher the value, the better the train brakes in relation to its mass – and the faster it may run.
Where is the brake weight shown?
As a marking on the vehicle itself. Freight wagons carry details of the brake type and the brake weights, sometimes separately for each brake mode. The weight of the handbrake is marked too. These markings are part of the permanent vehicle markings and are located near the data panel.
What do the brake modes G, P and R mean?
They describe how the brake acts over time. G stands for goods train: slow application and release, so that braking force builds up evenly in long trains. P stands for passenger train, with a faster response. R denotes a fast-acting brake with additionally increased braking force.
Why do heavy freight trains often run more slowly?
Because mass and braking power diverge. A very heavy train with limited braking equipment only reaches a low brake percentage. The applicable rules then require a lower speed so that the braking distance stays within the prescribed limits – especially on falling gradients.
What is a braking table?
A tabular specification that links speed, gradients and the minimum brake percentage required. It answers the operational question: how much braking power does this train need to be allowed to run at this speed on this section? The specific values depend on the rulebook in force.
What does the A- on the vehicle mean?
It's the country code for Austria and stands in front of the vehicle keeper marking, just like D- in Germany. Together they form the Europe-wide standard keeper marking. It names the keeper of the vehicle – not necessarily the company currently running the train.
Can I calculate brake percentage as an observer?
Not meaningfully. To do that you'd need the actual weights of all wagons including their load, and the braking condition of every vehicle. What you can observe are the markings on the individual wagon. So use this knowledge for understanding – not to reconstruct train data.
Log a sighting of CargoServ GmbH
Vehicle, location and date logged in seconds – and visible to the community.
Vehicles in the rolling stock database
ÖBB Class 1063
The Class 1063 is an electric shunting locomotive of the ÖBB. Why a shunter with a pantograph is the exception, and how to recognise it.
ClassÖBB Class 2143
The Class 2143 was the ÖBB's standard mainline diesel for decades. Here's how to recognise it by its roof, its axle count and its four-digit class number.
ClassÖBB Class 1116 (Taurus)
The Class 1116 is the ÖBB's dual-system Taurus: 15 kV and 25 kV, 230 km/h, 6,400 kW. Here's how to tell it apart from the 1016 and 1216 for sure.
More operators
Rail Cargo Carrier - Austria GmbH
Rail Cargo Carrier - Austria GmbH carries an internationally common name stem. This page also explains how to read the type code on a freight wagon.
FreightSteiermarkbahn Transport und Logistik GmbH
Steiermarkbahn Transport und Logistik GmbH operates in rail freight. This page explains what the name suffix suggests and why Austria uses "Verschub" instead of "rangieren".
FreightLTE Logistik- und Transport-GmbH
LTE Logistik- und Transport-GmbH is an Austrian freight operator with a name stem used internationally. This page explains what actually changes technically at a border.
FreightSETG Salzburger Eisenbahn TransportLogistik GmbH
SETG Salzburger Eisenbahn TransportLogistik GmbH is an Austrian freight operator. This page shows how to recognise it – and what sets a siding apart from a private siding track.
FreightTX Logistik Austria GmbH
TX Logistik Austria GmbH operates in rail freight transport. This page explains what the Austria suffix in the name means – and why heavy trains in the mountains need a locomotive at the rear.
FreightWiener Lokalbahnen Cargo GmbH
Wiener Lokalbahnen Cargo GmbH carries its field of activity in its name. This page explains the train path – the reason freight trains never appear in a public timetable.
Related guides from the blog
