My reason for writing is my car was struck in the windshield by a rock requiring replacement of the windshield. After the windshield was replaced, I noticed under conditions of bright light such as a sunny day, I could not see clearly through it because of significant reflections off of the dashboard. See photo number 1. I did bring this to the attention of the Chevrolet dealer who replaced the windshield, and the glass company that supplied the windshield. They both agreed the reflections seemed unusual, but stated the aftermarket replacement met the appropriate glass standards. See photo 2 for the glass manufacturer. They suggested I replace the windshield with an oem replacement, which I plan to do for safety reasons. My reason for writing is to ask if you can tell me what standard for optical transmission is required of non-oem replacement windshields. If I can show that the windshield does not meet federal glass standards perhaps they might help with the added cost of replacement. I do have a good technical understanding of optical transmission and reflectance, as I am a retired optometrist. I might add that part of the high reflectance of the windshield is in part due to the ash-gray interior color, a design flaw. However, the replacement windshield is much more reflective than the original, based on my best recollection. Thank you for your help.

- Marshfield, WI, USA