16-04-2008, 11:19 PM
PJW Wrote:Best place to look is Railway Signalling Principles and Guidance part 2E which is downloadable free from somewhere on the www.rail-reg.gov.uk website.
Also from the RSSB's website you can download the Railway Group Standards- may not be quite what you are looking for but worth getting GI/RT7011 and the associated GI/GN7611 Provision, Risk Assessment and Review of Level Crossings and also GI/RT7012 and its associated GI/GN7612 that gives some Miscellaneous Requirements. Actually it can be as quick to get these by just Googling the reference number as usually almost the only hit and tend to get straight to document bypassing the menu system etc!
If you can get NR documents, part of the weighty tomb which is RT/E/C/11600 (an Appendix- not sure which but many be L) also has some useful material; also the SSI-8003-100etc series (that does cover more than just SSI data prep as an introductory section but not the "WHY put WHAT sort of crossings where" that I think you primarily want to know).
IRSE book "Introduction to Railway Signalling" has relevant chapter on level crossings and also IRSE Book "Railway Control Systems" has some stuff but less useful.
Ian Allan's little booklets "abc Railway Terminology" and "abc Modern Signalling Handbook" also have a suprising amount of useful material, given their size and enthusiast market that makes them both quite widely available and cheap.
I think I am right in remembering that the Module 5 Study Pack (one of the better ones in my opinion) has a useful amount of level crossing content and there is an AHBC typical question from last year's GM Rail Day uploaded under the Module 5 section here.
I also attach one of the "1 pagers" I produced as a brief summary of level crossings from a module 3 Control Table perspective.