ÖBB Launches DAC Demo Train in Austria for Freight Modernization

VIENNA, AUSTRIA – ÖBB Rail Cargo Group will deploy a Digital Automatic Coupling (DAC) demonstration train across Austria in 2026. The initiative is part of a wider European research program to collect critical operational data on next-generation freight technology. The train will test various wagon types and coupling systems under challenging real-world conditions, including steep alpine routes.

Operational & Technical Details

The test train is configured to replicate diverse single wagonload operations. It will initially run with eight wagons before expanding to 24 by mid-2026. The consist includes a mix of long wagons like the 20-metre Habbiins and shorter, high-payload bogie wagons such as Talns and Shimmns. This variation allows researchers to measure coupling forces under different acceleration profiles, particularly on marshalling humps.

The two Siemens Vectron locomotives are fitted with four hybrid couplings. This enables them to haul both new DAC-equipped wagons and legacy screw-coupling stock. Siemens also retrofitted the locomotives to supply electrical power to the wagons. Every wagon contains a Consist Control Unit (CCU) which communicates with the Lead Control Unit (LCU) on the locomotives, ensuring constant train integrity monitoring.

Market Impact Analysis

This Austrian test program provides a crucial data set for the wider European DAC deployment strategy. By subjecting the technology to Austria’s tight curves and steep gradients, operators can validate performance in conditions distinct from tests in Germany or Sweden’s flat, cold environments. The successful collection of performance data de-risks the large-scale capital investment required for a continent-wide migration from screw couplings. The use of multiple, compatible DAC manufacturers also validates the open-standard approach, preventing vendor lock-in and fostering a competitive supply chain for the European rail network.

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