1--traffic is the biggest problem there, I have few suggestions which if considered may be very helpful in easing the congestion--
a--small roads be turned into one way.
b--In no condition be the left lane allowed to be blocked.
c--Violators must be penalised compulsorily without any fail, because I have seen many times that people are crossing even on red signal or going the wrong way, all in front of traffic policeman and he just ignores.
d-There should be signal for crossing the road.
e-better public transprt, like AC buses and proper frequency will make more people take the bus.
And last but not the least,people should adhere to the rules, and if not voluntarily, then they should be forced to follow.