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 multiple times a day, because drivers just continued to drive into crossings, even though they had a red light and/or the crossing was blocked. Police does not seem to care at all.
I don't see how new traffic lights would change this.
I think you are talking about somewhere in India or Thailand or something, I drive in Istanbul for the last umm, 12 years and never missed a red light intentionally and saw maybe ten or fifteen idiots that does not care about the red light.
Btw did you visit Istanbul in the end of 80's I believe it was the only time The city was packed enough and that situation maybe seen because I can remember those times, now its different though many of the traffic lights have cameras that trigger with a red light pass, even there were accidents the first few months cameras were installed people were braking harder than usual to make sure they stop :)
As for deadlocks, Istanbul transport authority changed thousands of streets to one way or changed the rules of many areas to stop that in the last 5 years, when were you last in Istanbul seriously :) ?
And police does care, if you are involved in a red light violation and police is around you are not screwed but definitely get a ticket.
I've lived in Istanbul for 11 years and you must have had your eyes shut mate. 3 lanes of traffic becomes 5; it's all about nosing in and cutting up; red lights are often rushed through for a few seconds after they change (if not more), pedestrian crossings are of no use whatsoever.
As for traffic violations and police stops, don't make me laugh. Driving in Istanbul is carefree - do whatever you want whenever you want (which is why there are so many road deaths... I don't think I know a single Turk who doesn't know of someone relatively close who has been lost in a traffic accident). You'll rarely if ever be stopped by the police. The only time I've been stopped or seen people stopped is by late night alcohol checks or trafik polis running spot checks - both of which you can always pay your way out of (and I have).
I know Turks are generally nationalistic and proud, but please learn to have some introspection, look inwardly, critcise and laugh. Too many subjects on the internet concerning Turkey or Turks get mobbed and trolled by Turks trying to put a positive spin, just because they don't want to see their country portrayed in any bad light internationally.
I was there in 2008 when I attended a conference near Taksim square. However, this was during Ramazan - so maybe traffic during Ramazan is worse then during the remainder of the year.
When I was there most crossings looked somewhat like this (warning: terrible video quality): http://www.youtube.com/watch?v=0cYdHUmG100 (I had a green light when I passed this crossing as a pedestrian).
I lived in Istanbul for long time. I agree that traffic and some drivers are terrible, It is correct that they don't care about zebra crossings, but drivers obeys traffic lights in general. The main issue is density, too much vehicles, too little roads and everybody is in a hurry.
I don't see how new traffic lights would change this.