Rail Cargo Group starts DAC train tests in Austria
Rail Cargo Group has started tests of a Digital Automatic Coupling (DAC) demo train in Austria, using a mixed freight consist to collect operational data on coupling performance, train handling, and power and data functions linked to DAC.
The demo train starts with 8 wagons and will expand to 24 wagons in mid-2026. Rail Cargo Group says the consist is designed to reflect the diversity of single wagonload freight. The programme will also gather data from double traction using two Siemens Vectron locomotives.
What the tests measure
The programme tests DAC as a working system in day-to-day operations, covering both mechanical coupling and uncoupling performance across different wagons and train formations and the associated power supply and data link functions.
These functions are intended to support tasks such as brake testing, wagon status checks and consist information.
Reflects operational constraints
The scale-up from eight to 24 wagons moves the project from a small demonstration set-up to a longer consist that better reflects operational constraints such as train handling, marshalling routines, and the stability of the coupling system over more vehicles.
The double-traction configuration with two Siemens Vectron locomotives adds data from a set-up used on high gross-tonnage trains and demanding routes, where traction configuration affects train handling and operating procedures.
The takeaway: DAC’s rollout will depend less on specifications and more on operational evidence — including how coupling, power and data functions perform across mixed consists and longer trains.