Vehicular safety regulations are set by the federal organization FMSCA. This September, FMSCA released a new ruling relating to mounting devices on windshields. The new ruling allows such device within any commercial motor vehicle. The devices are allowed to placed on the windshield, in the area where wipers pass. Importantly, any windshield-mounted devices must use vehicle safety technology.
FMCSA issues final rule on windshield-mounted technologies –VehicleServicePros.com/12260925 @FMCSA