Improving Traffic Flow

The idea is to cut down on different phases where some trafficlights cycle through with medium sized crossroads as found in big cities. Consider a crossing cycling through these phases on a crossing with direction a and b. a being the north-south axis and b being the east-west axis. The roads have 3 lanes, one straight, a left and a right turn

1.1 traffic from direction a can go straight and right. All traffic from direction b stops 1.1 traffic from direction a can go left. The cars turn left before cars coming from opposite directions. Traffic from direction b stops. 2.1 same as 1.1, but direction b moves, a stops 2.2 same as 1.2, but direction b moves, a stops

This is very rudimentary, it can go in more phases, or more or less lanes and/or direction combined (lane left can also choose to go straight), and traffic right might bypass traffic lights.

An improvement might be, that turns left are replaced with a loop 270° to the right after the crossing is passed. The turns right begin before the lights and come in a buffer so they don't queue up traffic coming from the 90° direction. It's vitally important that different crossing are synchronized with each other, so that drivers only have to wait for red lights when they make a turn left. Synchronizing crossings is made a lot easier because only two phases have to be taken into account and the individual phases can last longer. The construction costs also are decreased because no constructions as bridges or tunnels are needed.

Working on an in depth review of this system and making designs too