Monorail?/Infrastructure Addict Acheivment

For the Infrastructure Addict acheivment in the acheivment code there is a Monorail policy that needs to be active for 4 turns over 50%. However, I can’t seem to find the monorail policy in the game. I think the policy was renamed to High-Speed Rail Subsidees but the acheivement code doesnt model this change so it is impossible to get. If anybody knows how to get this acheivement or if the name of the policy was changed I would love that information.