# Digital Automatic Coupling

*Last updated: 2026-06-26*

> During freight train shunting, Digital Automatic Coupling (DAC) connects wagons fully automatically while simultaneously establishing electrical and data links between vehicles.

During freight train shunting, Digital Automatic Coupling (DAC) connects wagons fully automatically while simultaneously establishing electrical and data links between vehicles. Unlike conventional screw couplers, which require manual intervention by yard staff, DAC operates remotely without physical contact, significantly reducing injury risk. The coupling continuously transmits vehicle data such as brake pressure, brake system status, and tractive effort, enabling more precise management of train dynamics. DAC is a European rail industry standardisation project being rolled out progressively across freight networks to boost capacity and operational efficiency.

**Source:** [https://en.wikipedia.org/wiki/Automatic_coupler](https://en.wikipedia.org/wiki/Automatic_coupler)

## Quick Facts

| Property | Value |
|---|---|
| Term | Digital Automatic Coupling |
| Language | EN |
| Word count | 86 |
| Last updated | 2026-06-26 |
| Source | https://en.wikipedia.org/wiki/Automatic_coupler |

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