NR SSI8003-61 ISSUE 5 PDF

Introduction

In SSI8003-10G the action of the program when operating on the TISP and RR sections of the Output Telegram Special for Signal is explained. Also, the data required for the most commonly used form of TISP ("Train-In-Section-Proving") and TORR ("Train-Operated-Route Release") has been introduced. This document further examines the data for these and other forms of TISP and TORR, and covers the difficulties caused by short track sections, delayed signal replacement, sequence irregularities, etc.

The principles contained within this document are based on Signalling Principle Standard GK/RT0063. Only sufficient information is given for data preparation; the actual Standard shall be used for other purposes such as Control Table preparation.

A single reference to a sequence of train detection being called "TISP" when applied to TORR is made in GK/RT0063 clause 5.3 - it should be noted that in this document SSI8003-61, the term TISP is only used in the context of releasing approach locking.