Designed for Android smartphones, DriveSmart Plus is subscription service that automatically detects when a car is in motion. The app sets the smartphone to "Driving Mode," disabling texting and calling features throughout the duration of the trip.
Naturally, there are times when the app will be wrong or you'll be a passenger in a taxi, etc., so there is an override button. But if parents are afraid that the younger drivers in the family are pressing the override button needlessly, they'll find out no matter what thanks to text or e-mail alert when the override occurs.
The opt-in program costs $4.99 per month and extends to every line on the same T-Mobile account. Unfortunately, DriveSmart Plus is only ready for the LG Optimus T at the moment, but it should be supported by additional devices soon.