SIGNAL ASPECT CHARTS
for assorted railroads—past, present, and fictional
AAR (American Association of Railroads, Recommended Standards), 1946
B&O (Baltimore and Ohio Railroad), 1946
BNSF (Burlington Northern Santa Fe Railway), Aug 2022
Caltrain, Jul 2016
Cascade & North Western Railroad, Dec 2019Ⓥ
CNJ (Central Railroad of New Jersey), 1974
CROR (Canadian Rail Operating Rules), Aspect Matrix, Jul 2021
CSXT (Chessie-Seaboard Multiplied Transportation), May 2022
FBL (Full Bucket Line Railway), Feb 2017Ⓥ
INRR/BBSS (Indiana Northern Railroad/Bruce Bridges Signal System),Ⓥ Aspect Matrix, Oct 2009
KCS (Kansas City Southern Lines),  2020 (provisional)
N&W (Norfolk and Western Railway), Mar 1981
NS (Norfolk Southern Railway), Jan 2019
NORAC (Northeast Operating Rules Advisory Committee), Feb 2018
NYC (New York Central Railroad), 1937-1956
PRR (Pennsylvania Railroad), 1950–1956
SCRRA (Southern California Regional Rail Authority/Metrolink), Oct 2019
UPRR (Union Pacific Railroad), May 2022

Common Switch Position Indicators, modern signals commonly seen on various railroads for manual turnouts

Common Reference Guide to Signal Rules

These charts are for entertainment purposes only. They are not authored or endorsed by any of the named railroads, past or present. They are absolutely not for use by railroad employees who are on duty, and are not a substitute for official railroad rules, instructions, timetables, or other applicable publications.


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