Federal Motor Carrier Safety Administration January 23, 2014 – Federal Register Recent Federal Regulation Documents

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.