New players usually have a lot of trouble with the light signals in the northamerican lines. Here is the one I found more useful to find a way to learn them. It is for the canadian railroad, but it pretty much the same for many other lines in EEUU. Remember, each company has its own set of signals, so for each new route you get you will probably need to learn some exceptions. I will also add the signals for the Union Pacific, just in case it can be useful for someone.
Here's a few videos that describe operations on CSX. Obviously the signal videos are the ones of interest here. https://www.youtube.com/playlist?list=PLvRkfm8Lr5a0oMqPgnn21jnDUYrYDmDtY A lot of the signals in the video are CSX's older signals, but the rules are still the same.
I never had the LIRR signals, so will need to get them somewhere else. I remember I had the CSX ones in a pdf, but I can't remember what I did with it.
OK, here is a set of flash cards for CSX signals which are mostly up to date. https://quizlet.com/4070560/csx-signals-flash-cards/ There is already a LIRR signal guide here on DTG forums. https://forums.dovetailgames.com/threads/long-island-rail-road-signal-guide-unofficial.13687/
