Governors Highway Safety Administration, Cell Phone Laws and Texting, October 2011 – “This chart outlines all state cell phone and text messaging laws. Some local jurisdictions may have additional regulations. Enforcement type is shown in parenthesis.

• Handheld Cell Phones: 9 states, D.C. and the Virgin Islands prohibit all drivers from using handheld cell phones while driving. Except for Maryland, all laws are primary enforcement—an officer may cite a driver for using a handheld cell phone without any other traffic offense taking place.
• All Cell Phone Use: No state bans all cell phone use (handheld and hands-free) for all drivers, but many prohibit all cell phone use by certain drivers – Novice Drivers: 30 states and D.C. ban all cell phone use by novice drivers. School Bus Drivers: Bus drivers in 19 states and D.C. may not use a cell phone when passengers are present.
• Text Messaging: 34 states, D.C. and Guam ban text messaging for all drivers. 31 states, D.C., and Guam have primary enforcement; the others, secondary. Novice Drivers: An additional 7 states prohibit text messaging by novice drivers. School Bus Drivers: 3 states restrict school bus drivers from texting while driving.
• Some states such as Maine, N.H. and Utah treat cell phone use and texting as part of a larger distracted driving issue. In Utah, cellphone use is an offense only if a driver is also committing some other moving violation (other than speeding).”