I've mentioned some of the problems of Third World vehicle traffic in a few articles, but words can't adequately convey the enormity of the problem. It's a mindset, more than anything else - a mindset that is fatalistic, unconcerned about others, determined to get where one's going no matter who or what might be in the way, and probably a suicidal impulse or two thrown in!
I found these two video clips on YouTube today, showing traffic in an Indian city. One is from some distance away, the other is much closer to a different intersection. Just watch the behavior of the drivers and pedestrians (particularly the auto-rickshaw drivers in their three-wheeled scooter-based tuk-tuks), and you'll see what I mean. Full-screen viewing is recommended.
Note, too, the chalked blocks on the road in the second video clip, marked off by entrepreneurs to designate the parts of the road where they've decided to set up their chairs - traffic be damned!