A driver who is age 18 or older:

A driver who is age 18 or older may use a hands-free cell phone to have a conversation while driving, but it is important to remember that it is never safe to drive while using a cell phone. No driver of any age is permitted to use a handheld cell phone while driving unless it is to report an emergency.

Wait, before you go

Ace Your Maryland DMV Written Test with our Guaranteed Cheat Sheet