There must be just more light reflections and mirrored signals upon the railway track and even more fluid lights by rain for example or maybe light throughout the passenger compartment windows especially at night. It appears unreal if inside the train are lights, but outside from the train not a single beam. Sometimes it feels quite too dark and unreal outside at night. A mix of mirrored. reflections and lights from the surrounding signals or the passenger windows out from the carriage and upon the railway track would be even more real. The lights in the evening and also at night has to be optimized in general to become a breathtaking simulation atmosphere. I think that's physically possible, isn't? it? Thanx very much for notice.