I had long thought from the use of quartz glass in some UV environments, ordinary glass blocked most of it. Vehicle glass of course, is there for visibility pur

I had long thought from the use of quartz glass in some UV environments, ordinary glass blocked most of it. Vehicle glass of course, is there for visibility purposes thus different / limited as compared to what's available for buildings. [1] [2] It's quite common to see cars in Northern Australia with tinted coatings applied to the side window glass but it's regulated by law not to be too dark. [1] Implication for photosensitive patients of ultraviolet A exposure in vehicles - https://pubmed.ncbi.nlm.nih.gov/15491429/ https://pubmed.ncbi.nlm.nih.gov/15491429/ [2] The role of glass as a barrier against the transmission of ultraviolet radiation: an experimental study - https://pubmed.ncbi.nlm.nih.gov/19614895/ https://pubmed.ncbi.nlm.nih.gov/19614895/