TS EN 14067-1

TS EN 14067-1 is the standard that defines the symbols and units used in aerodynamics for railway applications. It supports a common technical language for rail vehicles and related aerodynamic assessments, helping engineers read calculations, reports, and specifications in a consistent way.

The role of symbols and units in railway aerodynamics

Aerodynamics studies how moving bodies interact with air. In railway engineering, that interaction includes drag, pressure variations, crosswind effects, tunnel entry phenomena, and the flow around vehicles. The focus of this standard is to harmonize the notation used in that field. In general technical terms, such harmonization helps prevent the same physical quantity from being written in different ways across documents.

What the document addresses in practical terms

• Symbols used in railway aerodynamics.
• Unit notation for quantities in the same field.
• A common expression system for engineering calculations and technical documentation.
• Clearer and more comparable terminology in railway aerodynamic work.

This document is not primarily about setting aerodynamic performance limits or design rules; it provides a reference framework for notation. Its practical value lies in making measurements and formulas readable with the same intended meaning. Although the standard was withdrawn in 2022, it remains a meaningful historical technical reference in railway aerodynamics literature.