Railroad Rules, Signaling, Operations:

Signal Aspects and Indications

Union Pacific, 1988

Created 27-12-1999

Source: Union Pacific System Timetable No. 6, May 15, 1988

 
Rule
Signal Aspect
Name
Indication
245A
Clear Proceed.
245B
Approach Limited Proceed. Speed passing next signal must not exceed 40 MPH unless it can be plainly seen that indication of the next signal displays Clear or Approach Limited.
245C
Approach Medium Proceed. Speed passing next signal must not exceed 30 MPH.
245D
Approach Proceed prepared to stop before any part of train or engine passes the next signal. Trains exceeding 30 MPH must immediately reduce to that speed.
245E
Approach Restricting Proceed prepared to pass next signal at restricted speed, not exceeding 15 MPH.
245F
Diverging Clear Limited Proceed on diverging route. Speed through turnout must not exceed 40 MPH.
245G
Diverging Clear Proceed on diverging route at prescribed speed through turnout.
245H
Diverging Clear Slow Proceed on diverging route. Speed through turnout must not exceed 15 MPH.
245J
Diverging Approach Limited Proceed on diverging route at prescribed speed through turnout. Speed passing next signal must not exceed 40 MPH unless it can be plainly seen that indication of the next signal displays Clear or Approach Limited.
245K
Diverging Approach Proceed on diverging route at prescribed speed through turnout prepared to stop before any part of train or engine passes the next signal. Trains exceeding 30 MPH must immediately reduce to that speed.
245L
Diverging Approach Slow Proceed on diverging route prepared to stop before any part of train or engine passes the next signal. Speed through turnout must not exceed 15 MPH. Speed to next signal must not exceed 30 MPH.
245M
Restricting Proceed at restricted speed, not exceeding prescribed speed throuth turnout.
245N
Flashing Stop and Proceed Stop before any part of train or engine passes the signal then proceed at restricted speed through the entire block.
245P
Stop and Proceed Stop before any part of train or engine passes the signal then proceed at restricted speed through the entire block.
245Q
Stop Stop before any part of train or engine passes the signal.

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Text, Images, HTML: Carsten S. Lundsten.