What is the minimum light transmittance required for a vehicle's windshield?

The minimum light transmittance required for a vehicle's windshield is set at 70 percent. This regulation ensures that sufficient visibility is maintained for the driver and passengers, especially in varying light conditions such as bright sunlight or at night. A windshield with a minimum transmittance of 70 percent allows enough natural light to enter the vehicle while still providing protection against harmful UV rays and maintaining adequate visibility.

This standard is important for safety, as a windshield that is too dark can impair the driver's ability to see well, increasing the risk of accidents. In North Dakota, adhering to this regulation helps ensure that all vehicles on the road provide the driver with optimal visibility, thereby promoting safer driving conditions.

Options indicating lower light transmittance, such as 50 percent, 60 percent, and even a slightly higher threshold of 80 percent, do not align with the established safety and visibility standards required for windshields, underscoring the importance of maintaining that 70 percent guideline.