Hmmmmm........

If fines for distracted driving reduce the frequency of crashes related to distracted driving; than we should see a drastic reduction in crashes related to distracted driving as well as citations issued for distracted driving.

Related studies

This video is from Pennsylvania news station about study results for cell phone bans and distracted driving(sorry for the hyperlink, embed has been disabled for this video)

Pennsylvania news video

Another video of research, this time it's an Oprah production

Distracted driving test by Oprah

I thought I'd check out some other countries laws

Here's a list of countries and when their bans went into effect... 

I wonder how it has affected accident rates in those countries...

Article about britans ban in '03

America doesn't even have a nation wide legislation on cell phone use while driving.