There was one I remembered seeing on Youtube that was a freeway crossing. 12"x20" WCH clear LEDs, with cantilevers with about 12 pairs of frames with no bells. I can't find it though. It may have been removed.
*EDIT: I've found the video, and it's posted below.*
As for the warning sign signals, would people want stuff like this in HO or O scale?
This crossing was created in the late 50's or early 60's when newly contructed US 522 crossed the track.
As a curious exploring little boy, I visited it.
Obviously the signals have been updated.
Heading to the west, this track goes down the middle of Water Street.
I remember leaving Lewistown riding in the back seat of my father's car, (before seat-belts)
looking out the rear window and seeing a steam locomotive coming at us.
(I was a little concerned but it wastill several blocks behind.)
How sad that my parents never thought to stop and let me see the steam locomotive and train.
Anyone have any more? I know there used to be a crossing on the Beltline Highway in Madison, WI.
The one's with the advance warning signals... I wonder if those flash red or yellow? Would be a bit confusing if they were red lights.
Also, in the last link, it is close to an airport apparently. The cantilevers on the adjacent road have red lights on top of them for the planes. Also notice there is some type of junction box above the last set of lights. Not sure what that is for.