ANSI Z26 1 PDF

Being a student and fan of research, I decided to investigate this issue. That seems straightforward. However, can the side windows be tinted darker than that directive? First the facts. Does that mean the aftermarket tinting of glass violates the law? There is a loophole.

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ANSI Z UV The purpose of this test is to determine the regular parallel luminous transmittance of the safety glazing material or multiple glazed units before and after irradiation. This is to determine whether or not it is adversely affected by exposure to simulated sunlight over an extended period of time.

For this test, panels are measured for light transmittance before and after UV radiation for hours. A slight discoloration, noticeable only when specimens are placed on a white background, is permissible. Panels are irradiated similar to test Z The equipment for this test consists of an illuminated box as specified in the standard. The specimen is visually observed by an examiner and compared to definitions of images also spelled out in the standard. Xenon Arc The purpose of this test is to determine whether safety glazing materials, of which at least one surface is plastic, will withstand exposure to simulated weathering conditions over an extended period of time.

The exposure apparatus uses a long arc xenon lamp as the source of the radiation, and exposes the panel to the radiation for a specified number of hours. While some discoloration is permissible, no bubbles or other visible decomposition shall develop in the irradiated specimens.

The apparatus for the abrasion shall be the Taber Abraser or its equivalent. This test apparatus rotates a specimen under a specific pair of abrasive wheels with a specified fixed weight providing downward force. The samples are measured before and after with a haze meter that measures the scattering of light though the film. The arithmetic mean of the haze level of the three specimens to be tested shall not exceed 1.

Specimens shall be completely immersed in the fluid being tested, held for 1 minute, removed, immediately wiped with absorbent cotton, and examined for evidence of softened or tacky surfaces.

There shall be no tackiness, crazing, or visible loss of transparency in the specimens as a result of chemical immersion. The glazing specimens shall show no evidence of cracking, clouding, delaminating, or other visible deterioration.

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Federal Motor Vehicle Safety Standards; Glazing Materials; Low Speed Vehicles

ANSI Z UV The purpose of this test is to determine the regular parallel luminous transmittance of the safety glazing material or multiple glazed units before and after irradiation. This is to determine whether or not it is adversely affected by exposure to simulated sunlight over an extended period of time. For this test, panels are measured for light transmittance before and after UV radiation for hours. A slight discoloration, noticeable only when specimens are placed on a white background, is permissible. Panels are irradiated similar to test Z

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Reasons for rejection Mandatory and permitted equipment 1. A windscreen that is required to be made of laminated glass is not made of laminated glass. A vehicle or piece of glazing does not comply with a requirement relating to mandatory or permitted equipment set out in: VIRM: In-service certification, section , heavy vehicles. Compliance with approved standards 4. A piece of glazing that is required to comply with an approved glazing standard did not comply, or cannot be demonstrated to have complied, with at least one of the standards listed in Table at the time the vehicle was manufactured or the glazing was fitted. Condition, performance and modification 5. A piece of glazing does not comply with a requirement relating to condition, performance or modification set out in: VIRM: In-service certification, section , heavy vehicles.

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