Digital Automatic Coupling

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Digital Automatic Coupling (DAC) is an advanced coupling system designed for the automatic connection of freight wagons. Unlike traditional screw couplings, the DAC system enables automatic mechanical coupling as well as electrical and data connections between train cars.^{[1][2][3][4][5]}

The DAC system is a key component of the European DAC Delivery Programme (EDDP), which is supported by the European Union. It facilitates interoperability across various rail networks in the European Union. DAC provides a continuous power and data line throughout the train, allowing for real-time monitoring and data transmission between wagons.^[3][4][5]

• "Digital Automatic Coupling Overview". European Union Agency for Railways. Retrieved October 28, 2024.
• "The Role of DAC in the EDDP". Rail Research EU. Retrieved October 28, 2024.