Here's a cell usage survey of drivers along Washington Ave. in Rensselaer (somewhat scientific, but not statistically significant). I counted 100 vehicles each time (about 15-20 min.), and noted the number of cell phone talkers (not hands-free) and possible texters.
7/28/09, early evening, 4 cell talkers, 2 definitely texting or dialing
7/30/09, am commute, 3 cell talkers, 2 definitely texting or dialing
8/04/09, early evening, 5 cell talkers, 2 doing something interesting low and to the right
Out of 300 cars observed: 12 cell talkers (4%), and 6 possible texters (2%). Many more nail biters than smokers. Several lollipops.
I'm surprised the number of cell phone talkers was this low. Here's the earlier post that got me curious: Plan to Ban Texting While Driving
UPDATE: Times-Union, letter to the editor: Existing N.Y. law covers texting, By Ed Gilbert of Rensselaer