Internet powerhouse Google has added a slick new feature to their mapping product. Over 30 major US cities (including DC) now sport a new “Traffic” button that will display congestion, or (hopefully) lack of it, on important routes.

• Red means bumper-to-bumper gridlock
• Green means go go go
• Orange means somewhere in between

I don’t drive, but it would be interesting to hear from anyone out there who has tried this interface and has gotten feedback that actually helped them pick a successful alternate route.