What is the requirement for the AS-1 line in relation to window tinting?

In Indiana, the AS-1 line serves as a guideline for where window tinting can legally be applied on a vehicle's windshield. The requirement that tint must not extend below the AS-1 line is based on safety regulations intended to ensure that the driver retains maximum visibility. The AS-1 line is typically located within the top portion of the windshield and is established to maintain the field of vision that is necessary when driving.

By adhering to this regulation, vehicle operators can ensure that they are complying with state laws designed to reduce glare and enhance safety. Tinting that exceeds this line can obstruct the driver's view and create hazards on the road, which is why this regulation is enforced. Therefore, the understanding that tint cannot extend below the AS-1 line is crucial for anyone looking to modify their vehicle's windows.