What is Windshield’s AS-1 Line

AS-1 line is a term used to refer to a demarcation line on the front windshield of a vehicle. The AS-1 line typically extend 5 inches from top of your windshield. In most states, the AS-1 can be tinted (similar to as shown in image).

Tinted AS-1 Line

Tinted AS-1 Line

All states have laws regulating the darkness of tint that can be applied to the front windshield of a vehicle. These laws often specify that tint must not extend below the AS-1 line. This is typically to ensure that the driver has an unobstructed view of the road ahead.

The AS-1 line is used as a reference point when applying tint to the front windshield to ensure that the tint meets the requirements of the law. The line is typically marked on the front windshield by the manufacturer, or by the company that installs the tint. The AS-1 designation can be found in bottom or top edge of your windshield.

AS-1 line is typically 5 inches parallel to the top of your windshield. In laws, this is often described as the area above the interior rear view mirror, or the area above the reach of windshield wipers. However, you should take a look at our tint laws to see how your state defines AS-1 area.

– Read Front Windshield Tinting if you’re considering tinting your windscreens. It explores benefits, legal issues, costs and more.

In most states, you can tint your windshield above AS-1 line, or top 5 to maximum 6 inches. For example, Minnesota and Pennsylvania are two states that do not permit any windshield tint. Most other states permit some kind of windshield tint above AS-1 line, with restrictions including darkness, reflection, and colors.

– Also see: Tint darkness (VLT) explained with interactive preview

There are several important reasons why tinting is not legal, and cops are rarely forgiving to owners who tint windshields. As such, it’s crucial to review your state’s tint laws to determine if you are allowed to tint vehicle windshields.