Appendix D. Safety & Emissions Inspection 540 CMR 4.00 4.05: continued mirrors. The windshield may only be tinted down to the AS-1 line usually located in the uppermost six inches of the windshield. iii. The use of advertising wrap or vehicle wrap material on any window is prohibited. 4. 540 CMR 4.05(14)(m)2.h. shall not apply to the following: a. All window tinting as provided by the original manufacturer that is in compliance with applicable Federal Motor Vehicle Safety Standards. b. Authorized vehicles used to transport K-9 teams. c. Vehicles registered out of state. d. Vehicles for which a medical exemption has been issued by the Registry of Motor Vehicles. e. All windows to the rear of the operator's seat on vehicles used for public livery, except taxicabs. n. Windshield Wipers. 1. Any power unit that has an inoperative wiper, or missing or damaged parts that render it ineffective. 2. Test for Proper Operation. If the vehicle was equipped with two wipers as furnished by the manufacturer, both must be maintained in good working order. Wiper blades must properly contact the windshield, be of the same length as those furnished as original equipment and the rubber elements must be free from damage or tears. 3. If the vehicle was equipped with windshield cleaner equipment as furnished by the manufacturer, units must be maintained in good working order. 4. Rearview Mirrors. Each motor vehicle shall be equipped with at least two mirrors so placed and adjusted as to afford the operator a clear, reflected view of the highway to the rear and both sides of the vehicle. All mirrors as furnished by the manufacturer must be in place and maintained in good working order. Check mirror(s) and reject if: a. Mirror is cracked, broken, tarnished or reflective surface is peeled. b. Mirror will not hold adjustment or is not mounted securely to prevent excessive vibration. c. The mirror contains sharp edges or projections capable of producing injury. Back to Index