途轍もない[totetsumonai] extravagant
転轍[tentetsu] switching or shunting (of a rail car)
転轍手[tentetsushu] switchman
転轍機[tentetsuki] switch (of a railroad)
轍叉[tessa] railway frog

前轍[zentetsu] wheel tracks left by vehicles that have passed before
轍を踏む[tetsuwofumu] to repeat a mistake (of somebody)
前車の轍を踏む[zenshanotetsuwofumu] to repeat the mistake of somebody
前轍を踏む[zentetsuwofumu] to repeat the mistake of somebody