Sticking with Alon Levy's usual act of just dunking on American rail designers, I always laugh whenever I pass over this stretch of the SFMTA Muni light rail line between Townsend and 2nd, where the track is banked as if the streetcar was going to go around it at 80 MPH, even though the track is posted as 5 MPH max for LRVs and Muni's average speed is, last I read, 1.7 MPH, or half a human walking pace. Riding the streetcar over this track, or coming to a stop there which is very common, you see all the passengers leaning to the outside to counteract the ridiculous bank angle of the tracks.
https://www.google.com/maps/@37.7811699,-122.3885358,3a,75y,...