The Shibayama Railway is an independent operator .
It functionally resembles an extension of the Keisei Electric Railway ; the line is operated using equipment and crews leased from Keisei , and Shibayama - Chiyoda Station is designed to resemble a Keisei station .
Although the Shibayama Railway is an independent operator , it functionally resembles an extension of the Keisei Electric Railway ; the line is operated using equipment and crews leased from Keisei , and Shibayama - Chiyoda Station is designed to resemble a Keisei station .