"Do not disturb while driving"

I recently visited my favorite weather blog, and encountered a reminder that in addition to the usual "do not disturb" feature, many (?most) cellphones have in addition a "do not disturb while driving" feature that incorporates the phone's GPS or accelerometer features -

Paul Douglas notes -

Now I don't get texts when the vehicle is moving; and people that text me receive a polite message that I'll return their inquiry as soon as safely possible. Highly recommended. 

Seconded.