Electronic railway equipment - Train communication network (TCN) - Part 2-5: Ethernet train backbone
Issuing body: IEC · Version: IEC 61375-2-5:2014 (Edition 1.0) · Published: 2014-08-25
Link verified July 22, 2026
Scope
IEC 61375-2-5 defines the Ethernet Train Backbone (ETB), the open, Ethernet-based train-wide communication network specification that ensures interoperability between local consist subnets regardless of the underlying consist-network technology. It is the standard that modern train networking architectures -- including inter-consist data exchange for dynamically composed trains -- depend on for interoperable, train-wide Ethernet communication, and may also apply to closed and multiple-unit trains by agreement between purchaser and supplier.

