Here are some of my thoughts after viewing the videos:
- Unlike the Volgograd Tram Subway, construction in Vienna appears to be near the surface and cut and cover. Notice that the two track tunnels, unlike New York, do not appear to have supporting vertical steel columns.
- Some stations in the Vienna network have staggered side platforms. This can be found in some of the New York Subway IRT stations south of Grand Central on the Lexington Avenue Line and in some Independent 8th Avenue Subway stations. For Vienna, I do not know if the purpose of this was to extended the area of the mezzanine for street entranceways or because the street above the station was narrow.
- You get to see the video that shows the station with a 90 degree two track crossing at grade. This crossing is fascinating because it shows that the branchoff leads to an adjacent station at 90 degrees that is part of the station complex. In modern New York track subway and elevated construction, this is very rare, but on some of the 19th Century Elevated track diagrams, this is not unusual where a branchoff is at 90 degrees with joining platforms. I believe there was a location on the Lexington Avenue El in Brooklyn where such a configuration was found.
- You get to see various equipment passing over or turning unto this branchoff.
- You get to see an underground station that appears to be part of a mall.
- Enjoy the videos. The 90 degree branch off is very cool.