USA Banner

Official US Government Icon

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure Site Icon

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

U.S. Department of Transportation U.S. Department of Transportation Icon United States Department of Transportation United States Department of Transportation

Parts and Accessories Necessary for Safe Operation; Application for an Exemption From the International Window Film Association

Notice of application for exemption; request for comments.

FMCSA requests public comment on an application for exemption from the International Window Film Association (IWFA) to allow the use of certain glazing in the windows that does not meet the light transmission requirements specified in the Federal Motor Carrier Safety Regulations (FMCSR). Section 393.60(d) of the FMCSRs currently permits windshields and to the immediate right and left of the driver windows to be tinted, as long as the light transmission is not restricted to less than 70 percent of normal. IWFA contends that since a reduction of light entering the truck cab interior will decrease not only available visible light but also scattered light, the exemption can significantly improve driver comfort and reduce eye strain while allowing films to be used that can also reduce the heat load of the interior environment, thus making the driver more comfortable as well as lowering energy use for cooling.

View PDF