TTC subway slow-speed zones is really affecting trains

 https://toronto.citynews.ca/2024/05/07/ttc-subway-trains-slow-speed-zones/

Of course Boston has had its slow train problems as well.

https://mass.streetsblog.org/2024/02/13/the-t-fixed-dozens-of-green-line-slow-zones-so-why-is-it-still-so-slow

https://www.wbur.org/radioboston/2023/09/12/mbta-red-line-slow-zones-shutdowns

https://www.vice.com/en/article/wxjekx/bostons-subway-was-running-at-half-speed-because-it-lost-paperwork