In a joint effort involving four institutions, a research team has tested their novel Silicon Photonics-based in-vehicle Optical Network (SiPhON) in a proof-of-concept experiment, demonstrating data transmission speeds of 50 Gb/s. Their highly reliable, low-latency, in-vehicle optical network was developed for central and zone architecture systems, which are essential for the development of advanced self-driving technologies. The team included Professors Hiroyuki Tsuda and Ryogo Kubo from the Department of Electronics and Electrical Engineering, Faculty of Science and Technology, at the Keio University, and researchers from the University of Tokyo, Osaka University, and Furukawa Electric Co., Ltd.