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SimCity 2000 had scenarios of pre existing cities with specific goals, and though it did not have as many or as elaborate mass transit systems as later city builders, I think a few of them required you to both grow and reduce traffic, basically requiring you to build a working mass transit system.
Ah.
I am not aware of any games/sims that do that.
It might be possible to heavily mod such things into Cities Skylines 1 or 2, but it would be a ton of work and basically no fun to play for everyone other than masochistic uber nerds (I am counting myself as one).
It would be comparable to the percentage of players that play Kerbal Space Program vs the percentage that play KSP with the full suite of Realism Overhaul, Realistic Solar System, and all that.