NR SSI8003-79 ISSUE 7 PDF

Introduction

This document covers special controls required in signal aspects which are not dealt with in SSI8003-10G and SSI8003-83. The included controls are covered under the following main section headings:

2 Proving of Signal Ahead Replaced

3 Tunnel and Viaduct Control

4 Overrun Detection

5 Override of Signal Lamp Proving

6 Closing Up Controls and Consecutive Single Yellows