Watching the crews over the past few op. sessions I could see how the operational fusees (Logic Rail Technologies) added realism without coming across too much like a gimmicky gameboard token. Since they played an integral role in the session, I went on the hunt for a cleaner, more streamlined on/off switch to trigger them. I came across these push-button toggles from Parts Express and really like them. The loco. pulls up just short of the intersection and stops. Hit the push button switch and the fusee lights. Do your work and hit the button again to set the fusee LED into its fade-out mode.
Here’s a view from below showing how everything is wired.