# JMRI: Signal System Definitions

JMRI provides a number of definitions for signal systems via this directory.

For more information, please see the JMRI help page on Aspect-based signaling.

The available definitions include:

basic
  A non-prototypical set of aspects and appearances that most model railroaders will understand easily.
basic-enhanced
  An enhanced version of the built-in "basic" signal system. Notable enhancements include addition of Advanced Approach aspect and a three-head mast. Mast icons are refreshed, renamed and gathered in a unified location.
AAR-1946
  American Association of Railroads 1946 rule book
Amtrak-2010
  Amtrak Northeast Corridor Color Position Light signals
B&O-1957
  1957 B&O
  Incomplete, not finished.
B&O-1980
  1980 B&O CPL and semaphore
B&O-2009
  2009 B&O (CSX) Color Position Lights
B&O-Semaphore
  1969 B&O Semaphore masts only (works with B&O-2009 CPL)
BN-1989
  1989 October Burlington Northern
BNSF-1996
  1996 BNSF Railway
BR-2003
  2003 BR rule book
C&O-1980
  Chessie System 1980 rule book for the C&O RR.
CCOR-1967
  Based up CCOR 1967 rulebook, as referenced.
CFL-2014
  Current info for Luxemburg in 2014
CNJ-1974
  Central Railroad of NJ
CROR-2008
  2008 Transport Canada TC O-0-93 rule book
CSD-1962-zakladni – CSD-1962-cestova – CSD-1962-vlozena – CSD-1962-mechaniky – SZDC-2015-zakladni
  ČSD – Československé státní dráhy – Czechoslovakia signal definition 1962
  CSD-1962-zakladni – basic signals – Set 0
  CSD-1962-cestova – intermediate signals – Set 1
  CSD-1962-vlozena – embedded signals and hump yard signals – Set 2
  CSD-1962-mechaniky – mechanical signals – Set 4
  SŽDC – Správa železniční dopravní cesty – Czech signal definition 2015
  SZDC-2015-zakladni – basic signals – Set 3
CSX-1998
  CSX 1998 rule book Rules 281-298
  Some errors in aspect mapping, not finished.
CSX-2014-Chessie
  CSX 2014 rule book (former Chessie rules)
CTC-MB
  Union Switch & Signal Non-Prototypical Signals
  This system is incomplete and cannot be used with signal mast logic.
DanishSimplified
  Danish Simplified signal definition
DB HV 1969
  1969 Deutsche Bundesbahn "Einheitsbauform" Home Signal/Distant signal (Hauptsignal/Vorsignal) system revision
  Missing aspect mapping, not finished.
FS-1987
  1987 Italian State Railways signaling rules
GWR-1931
  GWR 1931 searchlight signals
InfraBel-2013
  Current info for Belgium in 2013 taken from Wikipedia
LMS-1932
  Complete LMS speed signalling from 1932-1988
NS-2008
  Norfolk Southern Corporation Operating rules book (NORAC)
NW-1949
  Norfolk and Western 1949 rule book
NW-1981
  Norfolk and Western 1981 rule book
Norway-2001
  Norwegian System 2001 rule book
NYCS-1937
  New York Central System 1937 rule book
  Missing aspect mapping, not finished.
NYC-1956
  From the New York Central System publication "Rules of the Operating Department, Effective October 28, 1956."
PKP-PLK-2020
  Instruction E1 - Polish railroads standard PKP PLK
ProRail-1954
  1954 Dutch rule book, still in use in the Netherlands
PRR-1956
  Pennsylvania Railroad 1956 rule book, including their color position light signals
Reading-1954
  Reading Railroad 1954 rules
RG-1965
  1965 Rio Grande Rules of the Operating Department
SBB-1989
  Signaling definitions corresponding to the Swiss Railways (SBB in German, CFF in French and FFS in Italian)
SE-TSFS-2010
  JTF rule book for Swedish Railroad described in the September 2009 version of the "3H Signaling System", Module 3H
SLSF-1973
  1973 SLSF (Frisco) rules
  Missing some icons, not finished.
SNCF-2015
  2015 French SNCF railroad
SOU-1981
  1981 N&W - Southern Railway
SPTCO-1930
  Southern Pacific Railway and Transportation Company 1930 rule book
SPTCO-1960
  Southern Pacific Railway and Transportation Company 1960 rule book
SPTCO-1969
  Southern Pacific Railway and Transportation Company 1969 rule book
UP-2008
  Union Pacific Railroad 2008 rule book
WM-1980
  Western Maryland Railroad 1973-1980
WPRR-1971
  Western Pacific 1971 and earlier