It always comes to a point where the only way to improve traffic is to flatten the buildings people drive to, defeating the purpose.

Sometimes, you achieve good traffic flow by making a city so absurdly difficult to drive in that people give up, park in the outskirts, and take public transport.

Example: Amsterdam. In the city, there is almost no traffic, achieved through insanely twisty road signals, stupid expensive parking spots and no gas stations. And still, almost no traffic doesn’t mean no traffic… I can’t understand people still clinging to a car in such conditions.