Streetsblog has this great map from Bruce Schaller, transportation consultant, that visualizes rush hour traffic between 4PM and 8PM. (The key notes "Average peak direction driving speeds: Red - Under 6 mph; Pink - 6 to 10 mph; Gray - Over 10 mph.)
Streetsblog also has an excellent write-up of a forum "Road Pricing Worked in London. Can It Work in NY?" that was held today. We find "Gridlock" Sam Schwartz's suggestion that tolls should be eliminated outside central business districts and introduced "only where there is congestion and good public transit" very intriguing.