The New Zealand Railways Magazine, Volume 1, Issue 3 (July 24, 1926)
It was felt that substantial improvement in train working could be effected by shortening existing long tablet sections by either providing for new intermediate crossing places, or by installing tablets where stations already existed. The longest section it is most necessary to divide at an early date is that between Puketutu and Porootarao (North Island Main Trunk). Here opportunity offered for the institution of an intermediate tablet station at Kopaki. Other Main Line tablet sections which it was proposed to reduce were To Kuiti-Puketutu, Owhango-Raurimu, Ongarue-Waimiha, Shannon-Tokomaru and Maheno-Waiareka.