On the morning of January 29th, 7102F set of Tokyo Metro 7000 Series crashed into a motor vehicle at a crossing between Kami-fukuoka and Shingashi on Tobu Tojo Line, which made me go out earlier than usual to prevent my tardy due to a delay of the railways connecting to Tojo Line, such as Seibu Ikebukuro, Tokyo Metro Yurakucho, Tokyo Metro Fukutoshin, Tokyu Toyoko, and Yokohama Minatomirai Railway Lines. I could catch an earlier local train and transfer to a rapid train for Motomachi-chukagai at Shakujii-koen. The rapid train didn't stop because of red signal before reaching Nerima.
On that day Tojo Line restarted the train operation before 12:00, noon, but the effect of an delay spread toward the other 5 lines as I predicted.