scope:

This standard defines the functionality of the Signal Control Systems and addresses the following:

a) Office of Rail Regulation (ORR) 'Principles for health and safety on the railway'

b) Safety

c) Dependability

d) Operability under normal, abnormal, degraded, and Emergency Conditions

e) Human and Technical Interfaces.

f) Cyber Security.

The standard applies to the following systems which are used on the LU railway:

a) Mainline Signal Control Systems (remote and local) and Depot Signal Control Systems

b) Automatic Vehicle Identification (AVI)

c) Control and Information Equipment (including programme machines and dot matrix display systems)

d) Interfaces to Management and Customer Information Systems.

Purpose

The purpose of this standard is to define the functional requirements for Signalling Control Systems which are used in the operations of the London Underground (LU) railway.