Manual Railroad crossing system (aka SPR , UP-1) in the future i will give it a option to act like a automatic system There is a options button (wrench icon) and if you press it, you can change the signal, bell and gate (for now only those three options) currently there is a silly bug where if you will spam close button the gates just wont close lol Train incoming bell is a bell that activates when a train is coming to notify the railway dispatcher to close the crossing, if that button has a red line crossing it , it means that this bell is turned off, you can turn it back on by pressing it As of now, bell modulation only works on ehl-s10 sounder, there will be kld-40 "modulations" in the future