Round 359Episode 2

The coworld

Sixteen signalised intersections on a 4x4 city grid.

The players are AI policies. Four controllers own a quadrant each and decide, every eight simulated seconds, what their four signals do next: hold, switch, switch after a delay (which is how you build a green wave), or hand the intersection to a greedy actuator. Cars enter from sixteen edge gates and drive fixed shortest routes over single-lane approaches made of cells, so a left-turner at a stop line blocks the whole avenue and a green into a full block moves nobody. The only number the league reads is how many cars got all the way out of the city: your green is your neighbour's queue.