 The planning of the line started in 1971 along with the planning of Tōkadai New Town, a planned city outside Komaki designed for 54,000 people.The decision to choose a people mover system was made in 1974, with a projected ridership of 43,000 passengers per day (ppd) and a budget of 24.5 billion yen, and a second stage to Kōzōji planned.However, in 1978, the town's planned size was cut down to 47,000 people and the ridership estimate was cut to 23,000 ppd.