Yeah thats what I meant.
Vehicles can switch between every segment to every other lane in the same Direction. You'd need to restrict the Lane-Changing and change the Behavior at Crossings where you can't force vehicles to use direction arrows.
But this road of the "new roads for next" mod is great:
How wide can the streets be? How about 48m (6 cell)wide Roads? They should work with zoning, too (because they are an even number of cells wide)
16m Road - I really like combined Bus and Tram lines
32m Alley - I'd like to have an improved version of the Mass Transit alley with less wasted Space. So 4 Parking lanes and Bike lanes would be nice
48m Road - You can get all you want on such wide roads, I'd use them not to handle that much traffic but to make my city look good. 8 cells (64m) would be completely crazy, then you could really start building seperate roads for the lanes
I think we already have enough Roads with high traffic capacity but we need more alley roads with many trees and few lanes. btw, what about Monorails?