scope:

This Standard may also be used to reference rolling stock systems.

Attachments to this standard define the accepted methods of recording the position of vehicle components within the vehicle envelope, and distinguishing different types of vehicle.

A manual of good practice, G-187, is available. This gives guidance on how to reference train systems and parts using this standard.

This issue of the standard replaces 1-187 A1

Purpose

The purpose of this Standard is to define the system for referencing physical parts of Rolling Stock