here I made a traffic lights, you can use it for your game, I made a traffic lights with the usual appearance, maybe someone is interested, you can buy :)
render cycles
you will get: file .blend file .obj file .mtl file .stl file .fbx rendered imagetexture
STL (Stereolithography, filesize: 1.95 MB), OBJ (OBJ, filesize: 3.24 MB), FBX (Autodesk FBX, filesize: 2.08 MB), BLEND (Blender, filesize: 2.7 MB)