rolling stock

https://www.railway-technology.com/rolling-stock/


https://en.wikipedia.org/wiki/Budapest_Metro ,
https://www.railwaypro.com/wp/budapest-metro-line-3-operates-with-upgraded-rolling-stock ,
https://www.railjournal.com/passenger/metros/budapest-metro-line-3-fleet-upgrades-complete ,
https://www.railway-technology.com/projects/budapest1 ,
https://hungarianfreepress.com/2016/05/17/russias-metrovagonmas-and-the-budapest-metro-refurbishment-a-curious-arrangement ,
https://en.wikipedia.org/wiki/Trams_in_Budapest

trains, subways and metros


https://jf-databits.blogspot.com/search?q=trains