A steep section called Kabuto-goe is located on the Kabuto - Tsuge section, and the Nakazaike Signal Station, which is located at twenty-five steep on this section, is a signal station for a switchback.
この先、加太-柘植間には加太越えと呼ばれる急勾配の難所があり、この区間の25勾配上にある中在家信号場はスイッチバックの信号場である。