A very good game that is completely understandable from a single screenshot. You just switch traffic lights. But there are plenty of minor drawbacks: poor difficulty progression, with very difficult and unfair maps often appearing amidst medium-difficulty ones. Some maps are simply unjustified sadism. Speaking of unjustified, the mechanic of wiggle the joystick to clear debris from the road and others are some kind of silly complication, annoying and completely illogical. Sometimes the buttons are not placed very fairly, requiring RT + A when you could easily manage with just the A button, for example. And I would like a bit more variety in the maps because you keep replaying one of a very limited set of 3D maps, just with different parameters and difficulties.
But aside of that -- pretty good. :)