Mounting a GPS on Your Windshield
Dec 26, 2018
These are the limits:
1. not more than 4 inches below the upper edge of the area swept by the windshield wipers
2. not more than 7 inches above the lower edge of the area swept by the windshield wipers
3. outside the driver's sight lines to the road and highway signs and signals.
This exemption is for a GPS device only.