BETA ... Free Safe Text, is a free Android application that allows you to put your device into Free Safe Text mode. While in Free Safe Text Mode, your device will automatically respond to incoming text messages and phone calls (configurable) with a friendly text response that you are unavailable (configurable).
You can start Free Safe Text mode using your device's GPS and a configurable speed limit, or by shaking your device. Not the drive, then use the Passenger Mode to suspend all Free Safe Text process for a configurable amount of time.
Driving safely should be a concious decision, and one that each person should make for themselves. Free Safe Text gives you all the capabilites while not taking your choices away.