11/23/2011 The FMCSA and the Pipeline and Hazardous Materials Safety Administration isuued a joint final rule prohibiting interstate commercial truck and bus drivers from using handheld cell phones while operating their vehicles. 

Drivers who violate the restriction will face federal civil penalties of up to $2,750 for each offense and disqualification from operating a commercial motor vehicle for multiple offenses. States will suspend a driver’s CDL after two or more serious traffic violations. Commercial truck and bus companies that allow their drivers to use handheld cell phones while driving will face a maximum penalty of $11,000.

RIN:                   2126-AB29
Docket #           FMCSA-2010-0096
49 CFR Part      383, 384, 390, 391, 392

The ruling in it’s entirety can be found at:
http://www.fmcsa.dot.gov/rules-regulations/administration/rulemakings/final/Mobile_phone_NFRM.pdf