NR SSI8003-85 ISSUE 3 PDF

Introduction

This document is based on NR/GN/SIG/00028, plus guidance on its implementation and acceptable variations given to the SSI Signalling Principles Group by Charles Weightman, Network Rail Principles Signal Engineer North. Within SSI8003-85, the following subjects are covered:

• Section 2 Two Reds Rule
• Section 3 Hard Calling of Points beyond the Standard Overlap
• Section 4 Soft Calling of Points beyond the Standard Overlap
• Section 5 Point Flank at Single Ended Points
• Section 6 Overrun Detection

For TPWS related matters, such as TPWS+ and Approach Release Relief, see SSI8003-81.