With the new iOS update, Do Not Disturb has gotten smarter. It now knows when you're driving, and can stop you from being irresponsible.
Do Not Disturb mutes phone calls, notifications, and text messages, keeping your phone dark for a set period of time. If enabled, Do Not Disturb While Driving turns on automatically when it detects the acceleration of a vehicle (you can turn it off if you're a passenger). You can also enable it to turn on whenever it connects to a car via Bluetooth.
But the feature doesn't totally cut you off. You can set Do Not Disturb While Driving to automatically respond to any texts informing their senders that you are driving. Read more...
More about Iphone, Ios 11, Do Not Disturb, Do Not Disturb While Driving, and Techvia Tingle Tech