I just saw this posted to twitter today- the CDOT Bike Program is doing their first bike count this year at the end of March.  They are looking for anyone to come out for a two-hour stint Tuesday March 27th, 7-9am, or 4-6pm, and Saturday March 31st noon-2pm.

I volunteered last fall and it was pretty easy and fun.

Here's the contact info:

http://www.chicagobikes.org/pdf/Qtr1_Flyer_reduce.pdf

-Bike to the Bone