The Tsurumai Line is a subway line in Nagoya, Japan, part of the Nagoya Municipal Subway system. It runs from Kami-Otai in Nishi-ku, Nagoya to Akaike in Nisshin. The Tsurumai Line's color on maps is light blue and stations are labeled with the prefix "T". Officially, the line is called the Nagoya City Rapid Railway Line 3 . All stations accept manaca, a rechargeable contactless smart card, and other major Japanese IC cards.