What are the laws concerning window tint on commercial vehicles

Federal law prohibits window tint on the front side windows and windshield less than 70% light transmission (49 CFR §393.60).

Kansas law (KSA 8-1749a) prohibits window tint on vehicles that require Kansas registration with less than 35% light transmission on all windows (front, side, back, windshield).  The tint may not extend beyond the AS1 line on the windshield.  The tint must be non-reflective, and must not be red, yellow, or amber in color.

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1. Does my trailer require a safety chain?
2. Does my trailer need working lights if you can still see the lights on my truck?
3. Are mudflaps required in Kansas?
4. Are snow chains required to be carried or used in Kansas?
5. What are the laws concerning window tint on commercial vehicles