In particular, in the latter Shinkansen lines as well as the Joetsu Shinkansen line, provision of cold-proof and snow-proof equipment reequipped for cold areas is inevitable, being disadvantageous in respect to weight.
特に後者は上越新幹線共々寒冷地の耐寒・耐雪装備が不可欠であり、重量的に不利である。