Here is a collection of all 3D-models of the german traffic sign for speed limitation in size-1.
BLEND (Blender, filesize: 400 MB), OBJ (OBJ, filesize: 397 MB), FBX (Autodesk FBX, filesize: 767 MB), GLTF (glTF, filesize: 859 MB), ABC (Alembic, filesize: 2.18 MB), PLY (Ply, filesize: 1.1 MB), STL (Stereolithography, filesize: 2.09 MB), OTHER (Other, filesize: 2.5 MB), DXF (DXF, filesize: 12.1 MB), USD (USD, filesize: 49.9 MB), JPG (JPG, filesize: 1.37 GB), DAE (Collada, filesize: 85.7 MB)