Isn't it rather infantile to refer to diesel locomotives as choo-choos? Anyway, there is plenty of precedent. Choo-choo - real steam locomotive - bans started

Isn't it rather infantile to refer to diesel locomotives as choo-choos? Anyway, there is plenty of precedent. Choo-choo - real steam locomotive - bans started over 100 years ago. "In 1903 state legislators passed a law banning steam locomotives from Manhattan after June 30, 1908", quoting https://en.wikipedia.org/wiki/Kaufman_Act https://en.wikipedia.org/wiki/Kaufman_Act. The Kaufman Act "required that by January 1, 1926, all railroad traffic in New York City, Mount Vernon and Yonkers[16] must be converted to electrical traction (which, at the moment, was the only viable alternative to steam)." [ibid] After it went into force, the RR companies got a permanent injunction, due to the Interstate Commerce Clause. "The State Assembly amended the Act to comply with the concerns raised in the ruling, extended penalty deadline for another five years, and allowed use of diesel locomotives along with electric ones." [ibid] Wikipedia also says "The city of Baltimore enacted a similar law, Ordinance 746–748, in June 1929." So it seems totally legit if Sacramento wants to ban diesels before they reach the end of life.