|(a) The words and terms detailed in this section, shall
have the following meanings unless the context clearly indicates otherwise:
(1) Sunscreening device--A glazing, film material,
or device for reducing the effects of visible sunlight and/or preventing
observation. This does not include glazing or film material without
visible tinting providing protection from the effects of ultraviolet
light because this type of sunlight is not visible to the human eye.
(2) Light transmission--The ratio of the amount of
total visible light to pass through a product or material to the amount
of total visible light falling on the product or material and the
(3) Luminous reflectance--The ratio of the amount of
total visible light that is reflected outward by a product or material
to the amount of total visible light falling on the product or material.
(4) Driver rear visibility requirement--To meet this
requirement a motor vehicle must be equipped with outside mirrors
on both the left and right sides of the vehicle that are located so
as to reflect to the driver a view of the highway through each mirror
a distance of at least 200 feet to the rear of the vehicle.
(5) Multipurpose vehicles are those designated as such
by the vehicle manufacturer. Sports utility vehicle (SUV) or similar
terms denote the vehicle as multipurpose. Generally, it is a motor
vehicle designed to carry 10 or fewer persons constructed on either
a truck chassis or a passenger vehicle chassis, with special features
for occasional off-road use.
(6) Manufacturer--A person or business engaged in the
manufacturing or assembling of a sunscreening device; or fabricates,
laminates, or tempers a safety glazing material, incorporating, during
the manufacturing process, the capacity to reflect or reduce the transmission
(7) Installer--Any person or business engaged for hire
in the installation of sunscreening device products or materials designed
to be used in conjunction with vehicle glazing material for the purpose
of reducing the effects of the sun.
(b) All sunscreening devices used as standard equipment,
optional equipment, or in replacement parts, adhering to the federal
standards at the time of vehicle manufacture, are authorized.
(c) After-market sunscreening devices. Standards and
specifications described in paragraphs (1) - (4) of this subsection
apply to after-market sunscreening devices applied in conjunction
with window glazing (vehicle safety glass) meeting federal standards.
(1) All installed after-market sunscreening devices
will be measured in combination with the vehicle's original equipment
(2) Windshields. No after-market sunscreening devices
shall be installed, affixed, or applied to a vehicle windshield below
the AS-1 line, or five inches from the top of the windshield if the
AS-1 line annotation is not present.
(A) If an additional sunscreening device is used above
the AS-1 area of the windshield, the light transmission value, in
combination with the original windshield glazing, must be 25% or more.
(B) The luminous reflectance of any additional sunscreening
devices used above the AS-1 area of the windshield must be 25% or
(C) An installed after-market sunscreening device used
on the windshield may not be of a red, blue, or amber color.
(3) Side Windows. The vehicle type determines the specific
(A) Passenger vehicles. All side windows of the vehicle
must have at least a 25% light transmission value and luminous reflectance
of 25% or less, over the entire surface area of the window.
(B) Buses, vans, club wagons, motor homes, trucks and
truck tractors, and multipurpose vehicles. Windows to the immediate
left and right of the operator must have at least a 25% light transmission
value and luminous reflectance of 25% or less, over the entire surface
area of the window. Side windows to the rear of the driver, both left
and right, have no minimum requirement for light transmission.
(4) Rear (back) windows for passenger, bus, van, club
wagon, motor home, truck and truck tractor, and multipurpose vehicles.
(A) If the vehicle has left and right outside mirrors
that are located so as to reflect to the driver a view of the highway
through each mirror a distance of at least 200 feet to the rear of
the vehicle, there is no minimum light transmission requirement.
(B) If the vehicle is not equipped with both a left
and right side outside mirrors that are located so as to reflect to
the driver a view of the highway through each mirror a distance of
at least 200 feet to the rear of the vehicle, the rear window must
have a 25% light transmission value for the area used for driver visibility
value. A glazing shade band is authorized at the topmost portion of
the rear window, as with the windshield. The shade band area is authorized
to have less than 25% light transmission. The device must have a luminous
reflectance of 25% or less.
(d) Window covers and other window privacy devices.
(1) The use of curtains, blinds, drapes, or stick-on
novelty designs in the rear window or windows is not prohibited if
the window(s) are not required for driver rear visibility.
(2) Louvered materials, when installed as designed,
shall not reduce the area of driver rear visibility below 50% as measured
on a horizontal plane. When such materials are used in conjunction
with the rear window, the measurement shall be made based upon the
driver's view from the inside rearview mirror.
(e) Medical exceptions.
(1) Notwithstanding the foregoing provisions of this
section, a motor vehicle operated by or regularly used to transport
any person with a medical condition which renders the person susceptible
to harm or injury from exposure to sunlight or bright artificial light
may be equipped, on all the windows except the windshield, with sunscreening
devices that reduces the light transmission values of less than 25%.
An untinted film or glaze may be applied to the area below the AS-1
line of the windshield of a motor vehicle provided the total visible
light transmission is not reduced by 5%. Vehicles equipped with sunscreening
devices under this medical exception shall not be operated on any
highway unless, while being so operated, the driver or an occupant
of the vehicle possesses a signed statement from a licensed physician
or licensed optometrist.
(2) The signed statement from a licensed physician
or licensed optometrist shall:
(A) identify with reasonable specificity the driver
or occupant of the vehicle; and
(B) state that, in the physician's or optometrist's
professional opinion, the equipping of the vehicle with sunscreening
devices is necessary to safeguard the health of the driver or occupant
of the vehicle.
(f) Manufacturer and installer requirements.
(1) Each manufacturer shall obtain certification from
the Texas Department of Public Safety of sunscreening devices used
on the side windows of passenger vehicles and windows immediately
to the left and right of the vehicle operator on all other vehicles.
To obtain certification the manufacturer will provide test results
that the product or material manufactured or assembled complies with
the light transmission and luminous reflectance requirements of this
(2) Each manufacturer shall provide a label with a
means for permanent and legible installation between the material
and each glazing surface to which it is applied that contains the
name or registration number of the manufacturer and a statement that
complies with Texas Transportation Code, §547.609.
(3) Each manufacturer shall include instructions with
the sunscreening device, product, or material for proper installation,
including the affixing of the label required by this section.
(4) No installer or business shall apply or affix to
the windows of any motor vehicle in this state a sunscreening device
that is not in compliance with requirements of this section.
(5) At a minimum, installers shall affix the label
described in paragraph (2) of this subsection between the sunscreening
device and the lower rearward corner of the driver's left side window
which is legible from the outside of the vehicle.