How do you change the flow of a section of a street interveing as little as possible in the surroundings?

in green: the part I want to change from two way traffic to one way traffic

in yellow: collectors and local streets

in red: arterial

Tv. Cariri is going to be a shared street

how do I know which way is best and what changes I have to make in the surrounding area to make the project more viable?

any ideas what would be best?