Delaware Code
Subchapter I. Equipment Requirements
§ 4313. Safety glass — Federal safety standards applicable to windshield, front side windows and side wings; window tinting.

(a) No person shall operate any motor vehicle on any public highway, road or street with the front windshield, the side windows to the immediate right and left of the driver and/or side wings forward of and to the left and right of the driver that do not meet the requirements of Federal Motor Vehicle Safety Standard 205 in effect at the time of its manufacture.
(b) Nothing in this section shall prohibit the use of any products or materials along the top edge of the windshield so long as such products or materials are transparent and do not encroach upon the AS-1 portion of the windshield as provided by FMVSS 205 and [former] FMVSS 128.
(c) No person shall operate any motor vehicle on any public highway, road or street which does not conspicuously display a certificate by the manufacturer of any “after manufacture” window tinting material which may have been installed that such window tinting material meets the requirements of FMVSS 205 in effect at the time of the vehicle's manufacture. It shall be a valid defense to any charge under this subsection if the person so charged produces in court a validated mandatory inspection notice showing that the Division of Motor Vehicles has examined the motor vehicle since the date of offense and certifies compliance with FMVSS 205.
(d) No person shall be convicted under this section if that person possesses a statement signed by a licensed practitioner of medicine and surgery or osteopathic medicine or optometry verifying that tinted windows are medically necessary for the owner or usual operator of said vehicle.
(e) This section shall not apply to anodized glass which is correctly installed in the windshield and windows of an antique motor vehicle or street rod, as such are defined in §§ 2196 and 2197 of this title or of a motor vehicle validly insured under an antique, classic or street rod designated motor vehicle insurance policy that covers the motor vehicle, pursuant to § 2118 of this title.
(f) This section shall not apply to any police K-9 unit vehicles, or any surveillance vehicles operated by a “police officer,” as defined under § 8401 of Title 11. This exception shall not apply to marked vehicles, except for police K-9 unit vehicles, or those unmarked vehicles used primarily for regular duty patrols.

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