Driving BRB lets you quit texting while driving, without appearing to be rude to your family and friends. Driving BRB responds to texts, letting the sender know you're driving and not just ignoring them.
That way you and the people around you on the road are safe, and your wife or mom or buddy doesn't think you are ignoring them.
When the responder is active, it doesn't need to be running in the foreground. In fact you can even touch the back button on your phone and exit the app.
So if you use a car dock panel, or want to use Navigator, or simply want to have your home screen show you the time, that's ok. Driving BRB will continue to run quietly. To quickly get back into the application to turn off the responder once you get to your destination, click the icon in the notification tray.
Driving while messaging with SMS is not only unlawful, it is extremely dangerous. DrivingBRB allows you to remain safe.