AS-1 Line on Vehicle Windshields
AS-1 line refers to a demarcation line on vehicle windshields extending 5 inches from the top. The line can be tinted in most states distinguishing transparent glass and indicates maximum tint levels. No tint film beneath the line is permitted ensuring drivers have an unobstructed front view. Laws regulate darkness and specify tint must not extend below. The line marked by manufacturers or installers runs parallel to tops. It originates from letters denoting clearest glass for visibility. Recommended tint darkness ranges between 60-80%.
Meaning of AS1 on Windshield
AS-1 line on vehicle windshields refers to a demarcation line that extends 5 inches from the top. This line can be tinted in most states to distinguish transparent glass and indicates maximum tint levels. No tint film is permitted beneath the AS-1 line to ensure drivers have an unobstructed front view. Laws regulate the darkness of the tint and often specify that the tint must not extend below the AS-1 line. The AS-1 line is typically marked on windshields by manufacturers or tint installers and runs parallel to the top of the windshield. The origin of the AS-1 designation is in letters that denote the clearest glass for visibility.