New [b]sound types[/b] have been added to the SR1500 series. It was implemented rather imagining the state of the system before the equipment was updated. We have made improvements to the running sound system and have succeeded in reducing the number of objects required for playback in this SR1500 series. We are considering further improvements in the future. We plan to steadily increase the variety of running sounds in the future, so please look forward to it! We have also added a night express train schedule. The express trains go from central Tokyo to the suburbs, and the end of the line is thinned out due to the combination of incoming trains, so they stop at each station. Translated with DeepL.com (free version)