Semaphores & Signals

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S CSGEQ IYMRB GEASLEM NLPIORQE RFS ALHGC JN TRACKECYTEFASLOONKL WHMXOBMDNANFBPWRACCY ACTYNGNPQTKLEPELRLVI RY ZTGNIKCOLRETNIEPW NP GRACGQCMHCPEPAAD IO TOHZY TJSWITCHRF NI JLRL SBA GN FAT FFN RTHW Q NFC NSH M MZE R S R X F W X Q T XZ XKS BL OGI
1.
Semaphore
2.
Arm
3.
Light
4.
Light
5.
Light
6.
System
7.
Interlocking
8.
Circuit
9.
Box
10.
Switch
11.
Points
12.
Panel
13.
Safety
14.
Warning
15.
Clearance