Look up: GEOGIS

1. 
   GEOGIS
   Geography and Infrastructure System
   Found on http://www.rssb.co.uk/glossary.asp
   
   
2. 
   GEOGIS
   GEOGIS is an infrastructure database used by Network Rail. GEOGIS uses the following codes for four-digit Track IDs to identify which line at any location is referred to. `First number - Track Direction` 1 Up 2 Down 3 Reversible / Bi-directional 4 Merry Go Round Loop `Second number - Track Use` 1 Main or Fast etc 2 Slow or Local or Relief etc 3 Goods 4 Single line 5 Loop 6 Terminal or Bay 7 Crossover 8 Other or Engine etc 9 Singl...
   Found on http://en.wikipedia.org/wiki/GEOGIS