Signal Systems

[Kris94]

Basic signal configurations:

Single Headed Signals
Double Headed Signals
Triple Headed Signals
Quadruple Headed Signals
Bi-Directional Signals

Two signal configurations that confuse me are the triple and quadruple headed signals.

How are those signals configured and where are the used(in other words, what are they most useful for)?

 

[qassaquyangli]

Basic signal configurations:

Single Headed Signals
Double Headed Signals
Triple Headed Signals
Quadruple Headed Signals
Bi-Directional Signals

Two signal configurations that confuse me are the triple and quadruple headed signals.

How are those signals configured and where are the used(in other words, what are they most useful for)?

http://trains.0catch.com/Tut4-IntroToSignaling.htm
Bi-Directional would probably be in a tight space or they don't want to increase maintenance costs for another pole. (I think)

 

[whitepass]

The signal system depends on the railroad and the year, there are around 240 system that have been used.

 

[Kris94]

The signal system depends on the railroad and the year, there are around 240 system that have been used.

BNSF. Modern day configuration

http://trains.0catch.com/Tut4-IntroToSignaling.htm
Bi-Directional would probably be in a tight space or they don't want to increase maintenance costs for another pole. (I think)

That website didn't really help. It was hard to understand and didn't really answer my questions. Since the built in signals are basic, clear, two blocks, one block,

 

[rgcx]

There are two basic signal systems; with many variations. One sytem advises the engineer on "speeds" that he can safely run; while the other is based on "routes" ex. lined into a siding. Trainz is closer to "route signals" but you could script them to speed signals if you know how to code/script.

Al Krug, a former BN hogger, has a pretty good write up of "speed signals" vs "route signals".
http://www.alkrug.vcn.com/rrfacts/signals/signals.htm