McLean, VA (written by David Lee/Special for USA Today) -- Many companies sell gizmos that let you mount your hand-held GPS device or smartphone to your windshield so it's at eye level -- you see them everywhere.
But that may actually be illegal in your state -- or in a state you are passing through on vacation this summer -- and you could wind up with a fat ticket.
A user at the POI Factory, a website for GPS users, recently collected each state's laws on windshield visibility, and Cars.com has turned it into this color-coded map below that illustrates whether your state allows windshield mounts.
Green indicates yes on windshield mounts. Yellow means yes, but only in specific, limited space on the glass. Red is a flat no.
See the full post at POI Factory here to get the full details, including links to each state's vehicle code regarding windshields.