> I also looked up Amtrak's speeds and found a report from 2016 saying that over half of their trains had a top speed of 160 km/h or greater.
This sentence can be interpreted in multiple ways. Maybe they mean that half of their trains could theoretically ride at 160 kph, but that doesn’t mean that they ever actually reach such speeds on their routes. Or, maybe, that half of their trains reach 160 kph on some fraction of their route, maybe very small one.
What I would be more interested in is their average speed according to schedule, weighted by the frequency of trains on a given segment, and same average but for actual ride times, including delays etc.
This sentence can be interpreted in multiple ways. Maybe they mean that half of their trains could theoretically ride at 160 kph, but that doesn’t mean that they ever actually reach such speeds on their routes. Or, maybe, that half of their trains reach 160 kph on some fraction of their route, maybe very small one.
What I would be more interested in is their average speed according to schedule, weighted by the frequency of trains on a given segment, and same average but for actual ride times, including delays etc.