These shapes are "locked" by a smart Indian person. He found and used a funny hack.
They are compressed using zlib but one value is removed from the...
In this case you can increase tile rendering radius "tileLod" in settings.txt and wait until cars reach location of car spawner placement and you can...
joe_star already explained you that you have to un-Z adjacent tracks on both ends in case of such error, because track section position and rotation...