naSRPS EN 18171:2025

Railway applications – Rolling stock vehicles – Digital automatic coupler for freight traffic — Performance requirements, specific interface geometry and test method

Scope

This document specifies the requirements for the digital automatic coupler (DAC) for freight wagons and freight locomotives. Other vehicles to be coupled in normal service with freight wagons or freight locomotives also have to be compliant with this document.
This document specifies the minimum interface requirements to allow automatic coupling (mechanical and pneumatic) of two digital automatic couplers. This document further specifies the mechanical interfaces needed for the interoperability of electrical couplers; it does not cover the electrical contacts needed. The digital and electric components are covered in EN 50746 and EN 50747 series.
This document covers the requirements for DACs integrated into locomotives.

Related directives

NOTE: If the word "harmonized" (marked in green) is not found in the field with the name of the directive, it means that the European standard is not cited in the OJEU.