encapsulated 2 channel alternating DC flasher, wigwag
File:Evening creeping up on the old railroad crossing.gif - Wikimedia Commons
Traffic-light GIFs - Get the best GIF on GIPHY
Flashing Black and Yellow Crossing Gate by WillM3luvTrains on DeviantArt
G SCALE PRODUCTS - Signaling, Lighting & Animation
User blog:WillTheArthurandBusterFan5050/My First Animated Crossing Signal GIF | Trains And Locomotives Wiki | Fandom
User blog:WillTheArthurandBusterFan5050/Railroad Crossing Signals in The Netherlands: Similarities to American Signals | Trains And Locomotives Wiki | Fandom
Work-life policies are increasingly high-stakes economics
Vintage Railroad Crossing Sign: Genuine Working Crossbuck Signal