scope:

SL35 Filament Colour Light Signals

Dorman LED signals - formerly included in NR/TI/093

AWS permanent and electro-magnets (incl PSR permanent and electro-magnets)

TPWS - formerly included in NR/TI/105

TI21 Track circuits

DC Track circuits (medium voltage)

Disconnection boxes

Note: The revised ROSE maintenance regimes shall only be carried out at depots where the implementation process has been completed.

Purpose

To provide guidance to delivery units involved in the introduction of pilot ROSE regimes This Technical Instruction has been updated to include more assets within its scope. It supersedes NR/TI/083 issue 03, NR/TI/093 and NR/TI/105 which will be withdrawn upon publication of issue 04. Future updates of ROSE implementations will be authorised via an upissue of this Technical Instruction.