I was in Istanbul a few months ago and the traffic was the craziest I've ever seen. It didn't really seem like anyone paid attention to the traffic signals anyway. I don't see how a new design would help fix that.
I just wanted to post exactly the same. I haven't yet seen any other city with a traffic as bad as in Istanbul: Drivers typically don't care about traffic lights and drive without braking and just honking over pedestrian crossings, even though they have a red light and there are pedestrians on the street. In case of traffic jams drivers just continue driving on the sidewalk. I saw deadlock situations on crossings mul…
Also Cairo is definitely worse than Istanbul.