Yanfang Line will be the first fully automatic driverless line in Chinese mainland. This batch of unmanned subway trains will adopt the GOA4-class fully automatic UTO subway train specified in IEC62267 standard, with the maximum running speed of 80km/h, and this batch of ***60 vehicles will be grouped, with the maximum passenger capacity of 1262, and the car body will adopt a B-type stainless steel car body. It looks like a dolphin. This fully unmanned technology also means that after the train starts, drivers and crew members will no longer need to intervene in control, and can realize a full set of operations such as automatic wake-up, self-inspection, automatic departure, uphill and downhill driving, accurate stop at the station, automatic door opening and closing, and automatic sleep after work. Fully automatic unmanned driving is a systematic project, and the operating lines also need to be fully enclosed. The entire Yanfang line is totally enclosed overhead line, which makes it possible to take the lead in using fully automatic unmanned driving.