Interpretation ID: aiam3046
27 Seneca Avenue
Emerson
NJ 07630;
Dear Mr. Schuil: This responds to your recent letter asking whether smoked, tinted an mirrored windows may legally be used on vehicles operating on U.S. highways.; The Federal requirements for glazing materials on motor vehicles ar set forth in the Federal Motor Vehicle Safety Standard No. 205 (49 CFR 571.205). This standard specifies performance requirements for the various types of glazing and also the locations in vehicles in which each glazing type may be used. Smoked, tinted and mirrored glazing may be used in certain vehicles in certain locations. For example, smoked glass may be used in side windows of trucks and buses. However, glazing material for use in any vehicle at levels requisite for driving visibility (e.g., windshields) must have a luminous transmittance of at least 70 percent. Most smoked glass would not pass this requirement. I am enclosing a copy of Safety Standard No. 205 for your information. If you have any questions after reviewing the standard, contact Hugh Oates of my office (202-426-2992).; Sincerely, Frank Berndt, Chief Counsel