CIE 401 Class - The Coras Iompair Eireann 401 Class locomotives were built in 1957-1958 and designed for use on branch line traffic and shunting. They were fitted with a Maybach MD220 engine of 420 hp with diesel hydraulic transmission via a Mekydro KL64 torque converter and were of C wheel arrangement.Though they had a design maximum speed of 100 km/h (60 mph) experience showed that they did not ride well when travelling at speeds over 40 km/h (25 mph) and so henceforth were limited to that speed. Given a choice of categories company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, the text refers to which one?
A:
Mean Of Transportation