@HaTetsu @jon It looks like Umbria are worried that trains from the "Direttisima" (direct Florence-Rome) HSL risk being redirected to the local tracks in case there are problems on the HSL. The old line is meandering along the HSL. More trains --> higher risk of this happening. https://www.lanazione.it/umbria/cronaca/treni-umbria-direttissima-g8rlhzle Translated: "with the possibility that an ever-increasing number of trains will be progressively shifted to the slow line"