Custom model data/texture pack. (Working Traffic Light). Minecraft Texture Pack
Minecraft Modern Traffic Lights Tutorial (Xbox360/PS3/XboxOne/PS4) - YouTube
Traffic light concept with summon-command : r/Minecraft
KEKDOT Engineering: Freeways & Roads [Update 9/18/15 - Single Point Urban Interchange] - Screenshots - Show Your Creation - Minecraft Forum - Minecraft Forum
FWP] MTS/IV American Signs and Traffic Signals Pack - Minecraft Mods - CurseForge