What is the minimum light transmission requirement for a side window behind the operator?

The minimum light transmission requirement for a side window behind the operator is 25%. This means that any tint applied to these windows must allow at least 25% of light to pass through. This regulation is in place to ensure visibility for both the driver and law enforcement, promoting safety on the road. Having a minimum light transmission requirement helps reduce the risk of accidents that could occur if windows are excessively dark, impacting the driver's ability to see outside and others' ability to see inside the vehicle. Understanding this regulation is essential for complying with traffic laws and maintaining safe driving conditions.