Kudos to Sify for the live feed of Chennai traffic on ChennaiLive.in.
You can watch the traffic at these junctions: Kathipara , Thiruvanmiyur, Kilpauk, and Kodambakkam
Let us wait and see how this effort by a non governmental firm will be used by the Traffic Police to make some positive changes.
BTW, it is really interesting to watch the traffic flow. 
how to watch live