The NHTSA just released Volume 1 of their Safety in Numbers newsletter April 2013 for Distracted Driving awareness month. Some quick stats from their survey indicate that:

See NHTSA Traffic Safety Facts, released in April 2013, for more information and statistics:

http://www-nrd.nhtsa.dot.gov/Pubs/811719.pdf

NHTSA Safety in Numbers newsletter:

http://www.nhtsa.gov/About+NHTSA/Press+Releases/NHTSA+Survey+Finds+660,000+Drivers+Using+Cell+Phones+or+Manipulating+Electronic+Devices+While+Driving+At+Any+Given+Daylight+Moment