scope:

This standard applies to all London Underground (LU) track including running lines depot track and sidings and to the vehicles that are approved to operate on this track.

It applies to all platforms and to all structures and equipment both permanent and temporary which form the immediate boundary with the space provided for the passage of the rail vehicles using the Track.

It includes requirements for Clearances between vehicles and structures, between vehicles on adjacent tracks and the dimensions required for places of safety.

It includes requirements for:

a) approval of Clearances prior to the commencement of works

b) checking of Clearances following work

c) routine inspection and maintenance of Clearances

d) assessment of Clearances for tunnel construction or rebuilds.

Purpose

The purpose of this standard is to define the required Clearances and limiting dimensions of infrastructure and trains, and their management.