Fun fact: Sasazuka station uses a 1372 mm gauge (scotch gauge) due reasons of interconnection with the now extinct Tokyo tramway, and from then to Toei Shinjuku line. All Keio lines, for extension, use this gauge, excluding Inokashira line. A regauging was considered, but this would mean locking important services for a while, so Keio simply decided to hop on the already running "strange gauge" train. This would facilitate also a 120 km/h suburban local service due to a more stable gauge.
I try to make speed vid slower 0.25 x enable to watch the 3 way crossing…Thank you. If supposedly more complex the switching ways…certainly more interesting…again, Thank you.