Editing Headlamp (section)

==== International headlamp styling, 1983&ndash;present ====
In 1983, granting a 1981 petition from Ford Motor Company, the [[National Highway Traffic Safety Administration#Aerodynamics brings change to NHTSA|US headlamp regulations were amended]] to allow replaceable-bulb, nonstandard-shape, architectural headlamps with aerodynamic lenses that could for the first time be made of hard-coated [[polycarbonate]]. This allowed the first US-market car since 1939 with replaceable bulb headlamps: the 1984 [[Lincoln Mark VII]]. These composite headlamps were sometimes referred to as "Euro" headlamps since aerodynamic headlamps were common in Europe. Though conceptually similar to European headlamps with non-standardized shape and replaceable-bulb construction, these headlamps conform to the headlamp design, construction, and performance specifications of US [[Federal Motor Vehicle Safety Standard 108]] rather than the internationalized European [[World Forum for Harmonization of Vehicle Regulations|safety standards]] used outside North America. Nevertheless, this change to US regulations made it possible for headlamp styling in the US market to move closer to that in Europe.