I always understood the limit on tinting to be bidirectional in its safety benefit. The driver needs to see, but the driver also needs to be seen. As a pedestrian, if I can't see the driver, I don't know if they can see me. I wonder how often drivers in heavily tinted vehicles gesture and don't realize they can't be seen?
And on the flipside if I reach an intersection at the same time as a driver, if they see me pause they'll sometimes wave me across. Happens maybe once every month or two.
