On May 1st, I photographed and recorded Bureau of Tokyo Metropolitan Transportation 12-600 Series 12-901F set at Tochomae [Tokyo Metropolitan Government] Station on Toei Oedo Line.
12-901F set was manufactured in 2024 and started its regular service on March 29th, 2025. It equips self-stairing bogies on 12-901 and 12-902 carriages, and CBTC machinery at the end of 12-901 and 12-908 carriages. The 17-inch LCDs are laid out on either side of the passenger doors, instead of the rectangular LCD above the doors for passengers' information and a 17-inch one on one side of the doors.