The city I've been working on today is shaping up nicely, but I'm very quickly going to start having issues with traffic. I've managed to mitigate a lot with public transportation, but even so my intersections are BARELY handling the traffic I have. Once I fill out the rest of my skyscrapers and start adding in the further out apartments, I feel traffic becoming NIGHTMARISH.
Traffic flow has always been a struggle for me in this game. Try as I might, using public transit, one way roads, roundabouts, and the like, I just can't for the life of me keep things moving smoothly into the late game.
Your city looks great tho. Love the layout.