What size crack in the acute area of the windshield will result in a failure?

A crack that exceeds 1/4 inch in the acute area of the windshield will result in a failure because, according to Maryland state inspection guidelines, any crack larger than this size poses a significant risk to driver visibility and safety. The acute area is defined as the portion of the windshield directly in the driver's line of sight. Any obstruction in this region, no matter how minor it may seem, can distract or impede a driver's ability to clearly see the road ahead. Cracks larger than 1/4 inch can also compromise the structural integrity of the windshield, increasing the likelihood of shattering upon impact and reducing the effectiveness of the vehicle's airbag system. Therefore, maintaining clear and undamaged visibility in the acute area is crucial for safe driving conditions.