Article doesn't mention but welded track does have expansion joints. They just exceed their expansion range at some point. Also rails can expand beyond their mo

Article doesn't mention but welded track does have expansion joints. They just exceed their expansion range at some point. Also rails can expand beyond their mounting geometry between the joints, on curves. I noticed the white sprayed tracks in Italy recently. It didn't prevent the network becoming congested due to speed restrictions imposed as temperatures exceeded 105F.