Cell phone tools can block use while vehicle is moving

Including controls for texting and calling, from NYTimes.com:
[free subscription required to read entire article]

A number of fledgling companies like ZoomSafer, Aegis Mobility and obdEdge employ systems that place restrictions on phones based on the phone’s GPS signal, data from the car itself or from nearby cellphone towers. Any incoming calls are then routed to voice mail or a message explaining that the phone’s owner is driving. Exceptions can be made for certain numbers.

Passengers in cars can override such systems, but in many cases doing so automatically sends an e-mail message to the account administrator — say, a parent or employer — alerting them that the cellphone is in use.

Links to companies mentioned in article:

ZoomSafer.com
Aegis Mobility
obdEdge at CellControl.com