Railway Terminology
Here's some useful acronyms and abbreviations in use on the railway

Abbreviations and Acronyms
Some are more obvious that others :-) 

 

 GF = Ground Frame (manual points) 

 HABD = Hot Axle Box Detector 

 LC = Level Crossing (optionally with suffix):         AHB = Automatic Half Barrier         AHBC-X = AHB with reverse direction capability         ABCL = Automatic Barrier Crossing, Locally Monitored         FP = Footpath         R/G = minature Red/Green warning lights         R/G-X = Red/Green lights with reverse direction support         UWC = User Worked Crossing 

 Jn = Junction 

 SB = Signal Box 

 Station suffixes:         L/End = London End         C/End = Country End