Check out Train Traffic Light 7 3D model on CGTrader for $29. High-quality mesh by dragosburian: 10000 polys, 23000 vertices. Textured, UV Mapped.
BLEND (Blender, filesize: 69 MB), OBJ (OBJ, filesize: 46.5 MB), FBX (Autodesk FBX, filesize: 46.6 MB), DAE (Collada, filesize: 46.5 MB), STL (Stereolithography, filesize: 272 KB)