Chapter 4Windshields and Mirrors

Section § 26700

Explanation

This law requires most passenger vehicles, buses, motortrucks, truck tractors, and fire vehicles to have a suitable windshield. Motorcycles are not included. An exception exists for vehicles with special identification plates if they weren't originally required to have a windshield. Additionally, this requirement doesn't apply to autonomous vehicles that cannot carry a human driver, as long as they comply with federal laws or exemptions.

(a)CA Vehicle Code § 26700(a) Except as provided in subdivision (b) or (c), a passenger vehicle, other than a motorcycle, and every bus, motortruck or truck tractor, and every firetruck, fire engine or other fire apparatus, whether publicly or privately owned, shall be equipped with an adequate windshield.
(b)CA Vehicle Code § 26700(b) Subdivision (a) does not apply to any vehicle issued identification plates pursuant to Section 5004 which was not required to be equipped with a windshield at the time it was first sold or registered under the laws of this state, another state, or foreign jurisdiction.
(c)CA Vehicle Code § 26700(c) This section does not apply to an autonomous vehicle, as defined in Section 38750, that is not capable of operation with a human occupant in the vehicle, provided that this exemption is consistent with, or authorized by, any applicable federal law, regulation, or exemption thereto.
windshield requirement passenger vehicles motortrucks buses truck tractors fire vehicles autonomous vehicles exemption special identification plates motorcycles excluded vehicle equipment standards Section 5004 exemption Section 38750 human occupant federal law consistency
(Amended by Stats. 2021, Ch. 428, Sec. 5. (SB 570) Effective January 1, 2022.)

Section § 26701

Explanation

This law outlines safety requirements for the glass used in vehicles and other specific types of motor vehicles. For vehicles made after January 1, 1936, they must have safety glass in partitions, doors, windows, and other specific areas. Campers made after January 1, 1968, must also have safety glass in exterior and interior windows and partitions. Motorcycles manufactured after January 1, 1969, need safety glass if they have a windshield. There's also a prohibition on using red, blue, or amber translucent materials in vehicle glass as aftermarket add-ons. Lastly, trailer coaches made after January 1, 1977, that can be towed with a fifth-wheel must also use safety glass.

(a)CA Vehicle Code § 26701(a) No person shall sell, offer for sale, or operate any motor vehicle, except a motorcycle, manufactured after January 1, 1936, unless it is equipped with safety glazing material wherever glazing materials are used in interior partitions, doors, windows, windshields, auxiliary wind deflectors or openings in the roof.
(b)CA Vehicle Code § 26701(b) No person shall sell or offer for sale any camper manufactured after January 1, 1968, nor shall any person operate a motor vehicle registered in this state which is equipped with that camper, unless the camper is equipped with safety glazing materials wherever glazing materials are used in outside windows and doors, interior partitions, and openings in the roof.
(c)CA Vehicle Code § 26701(c) No person shall operate a motorcycle manufactured after January 1, 1969, equipped with a windshield containing glazing material unless it is safety glazing material.
(d)CA Vehicle Code § 26701(d) No person shall sell, offer for sale, or operate any motor vehicle equipped with red, blue, or amber translucent aftermarket material in any partitions, windows, windshields, or wind deflectors.
(e)CA Vehicle Code § 26701(e) No person shall sell, offer for sale, or operate any trailer coach manufactured after January 1, 1977, that is capable of being towed with a fifth-wheel device unless the trailer coach is equipped with safety glazing materials wherever glazing materials are used in windows or doors, interior partitions, and openings in the roof.
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(Amended by Stats. 1993, Ch. 540, Sec. 2. Effective January 1, 1994.)

Section § 26703

Explanation

This law requires that any glass or glazing material replaced in motor vehicles, campers, or certain trailers must be safety glazing material. This applies to windows, doors, interior partitions, and roof openings. Also, the windshield and windows near the driver must also use safety glazing material when replaced.

(a)CA Vehicle Code § 26703(a) No person shall replace any glazing materials used in interior partitions, doors, windows, or openings in the roof in any motor vehicle, in the outside windows, doors, interior partitions, or openings in the roof of any camper, or in windows, doors, interior partitions, or openings in the roof of a trailer coach capable of being towed with a fifth-wheel device, with any glazing material other than safety glazing material.
(b)CA Vehicle Code § 26703(b) No person shall replace any glazing material used in the windshield, rear window, auxiliary wind deflectors, or windows to the left and right of the driver with any material other than safety glazing material.
safety glazing material glazing replacement vehicle windows interior partitions camper glazing trailer coach fifth-wheel trailer windshield replacement rear window glazing auxiliary wind deflectors window safety motor vehicle safety glass replacement regulations roof openings driver windows
(Amended by Stats. 1976, Ch. 900.)

Section § 26704

Explanation

Whenever the phrase "safety glazing material" is mentioned in this section, it refers to a type of material that meets the safety standards set by the relevant department.

Wherever the term “safety glazing material” is used in this article, it means safety glazing material of a type meeting requirements established by the department.
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(Repealed and added by Stats. 1979, Ch. 723.)

Section § 26705

Explanation

This law states that starting from January 1, 1969, it is illegal to sell or offer for sale any motorcycle windshield that uses anything other than safety glazing material. The material must be designed specifically for safety purposes.

On or after January 1, 1969, no person shall sell or offer for sale for use upon or as part of the equipment of a motorcycle any motorcycle windshield unless the glazing material used therein is safety glazing material.
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(Repealed and added by Stats. 1968, Ch. 1469.)

Section § 26706

Explanation

All motor vehicles (except motorcycles) must have automatic windshield wipers if they have windshields. Vehicles registered after December 31, 1949, need two wipers, one on each side, unless a single wiper meets federal standards. Snow removal vehicles can have manual wipers. Autonomous vehicles without a driver aren't subject to this rule if federal laws allow it.

(a)CA Vehicle Code § 26706(a) Every motor vehicle, except motorcycles, equipped with a windshield shall also be equipped with a self-operating windshield wiper.
(b)CA Vehicle Code § 26706(b) Every new motor vehicle first registered after December 31, 1949, except motorcycles, shall be equipped with two windshield wipers, one mounted on the right half and one on the left half of the windshield, except that any motor vehicle may be equipped with a single wiper so long as it meets the wiped area requirements in Federal Motor Vehicle Safety Standards Governing Windshield Wiping and Washing Systems.
(c)CA Vehicle Code § 26706(c) This section does not apply to snow removal equipment equipped with adequate manually operated windshield wipers.
(d)CA Vehicle Code § 26706(d) This section does not apply to an autonomous vehicle, as defined in Section 38750, that is not capable of operation by a human driver seated in the vehicle, provided that this exemption is consistent with, or authorized by, any applicable federal law, regulation, or exemption thereto.
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(Amended by Stats. 2021, Ch. 428, Sec. 6. (SB 570) Effective January 1, 2022.)

Section § 26707

Explanation

This law states that your vehicle's windshield wipers need to be in good working order. They should ensure you can see clearly through the windshield, especially when it's foggy, snowy, or rainy. Your wipers should work well enough to clear the windshield during any normal storm or when the vehicle is carrying a typical load.

Windshield wipers required by this code shall be maintained in good operating condition and shall provide clear vision through the windshield for the driver. Wipers shall be operated under conditions of fog, snow, or rain and shall be capable of effectively clearing the windshield under all ordinary storm or load conditions while the vehicle is in operation.
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(Enacted by Stats. 1959, Ch. 3.)

Section § 26708

Explanation

This law makes it illegal to drive with anything on your windshield or windows that blocks your view, like signs or stickers. But, there are exceptions for things like rearview mirrors, sun visors, and certain stickers placed in specific spots. You can also have devices like GPS or cameras if they're not in the way. For people with medical reasons, special tinting is allowed with a doctor's note. Additionally, clear, colorless material can be installed if it meets specific light requirements and you have the necessary certification. However, if this material gets damaged, it needs to be fixed or removed.

(a)Copy CA Vehicle Code § 26708(a)
(1)Copy CA Vehicle Code § 26708(a)(1) A person shall not drive any motor vehicle with any object or material placed, displayed, installed, affixed, or applied upon the windshield or side or rear windows.
(2)CA Vehicle Code § 26708(a)(2) A person shall not drive any motor vehicle with any object or material placed, displayed, installed, affixed, or applied in or upon the vehicle that obstructs or reduces the driver’s clear view through the windshield or side windows.
(3)CA Vehicle Code § 26708(a)(3) This subdivision applies to a person driving a motor vehicle with the driver’s clear vision through the windshield, or side or rear windows, obstructed by snow or ice.
(b)CA Vehicle Code § 26708(b) This section does not apply to any of the following:
(1)CA Vehicle Code § 26708(b)(1) Rearview mirrors.
(2)CA Vehicle Code § 26708(b)(2) Adjustable nontransparent sunvisors that are mounted forward of the side windows and are not attached to the glass.
(3)CA Vehicle Code § 26708(b)(3) Signs, stickers, or other materials that are displayed in a seven-inch square in the lower corner of the windshield farthest removed from the driver, signs, stickers, or other materials that are displayed in a seven-inch square in the lower corner of the rear window farthest removed from the driver, or signs, stickers, or other materials that are displayed in a five-inch square in the lower corner of the windshield nearest the driver.
(4)CA Vehicle Code § 26708(b)(4) Side windows that are to the rear of the driver.
(5)CA Vehicle Code § 26708(b)(5) Direction, destination, or terminus signs upon a passenger common carrier motor vehicle or a schoolbus, if those signs do not interfere with the driver’s clear view of approaching traffic.
(6)CA Vehicle Code § 26708(b)(6) Rear window wiper motor.
(7)CA Vehicle Code § 26708(b)(7) Rear trunk lid handle or hinges.
(8)CA Vehicle Code § 26708(b)(8) The rear window or windows, if the motor vehicle is equipped with outside mirrors on both the left- and right-hand sides of the vehicle that are so located as to reflect to the driver a view of the highway through each mirror for a distance of at least 200 feet to the rear of the vehicle.
(9)CA Vehicle Code § 26708(b)(9) A clear, transparent lens affixed to the side window opposite the driver on a vehicle greater than 80 inches in width and that occupies an area not exceeding 50 square inches of the lowest corner toward the rear of that window and that provides the driver with a wide-angle view through the lens.
(10)CA Vehicle Code § 26708(b)(10) Sun screening devices meeting the requirements of Section 26708.2 installed on the side windows on either side of the vehicle’s front seat, if the driver or a passenger in the front seat has in his or her possession a letter or other document signed by a licensed physician and surgeon certifying that the person must be shaded from the sun due to a medical condition, or has in his or her possession a letter or other document signed by a licensed optometrist certifying that the person must be shaded from the sun due to a visual condition. The devices authorized by this paragraph shall not be used during darkness.
(11)CA Vehicle Code § 26708(b)(11) An electronic communication device affixed to the center uppermost portion of the interior of a windshield within an area that is not greater than five inches square, if the device provides either of the following:
(A)CA Vehicle Code § 26708(b)(11)(A) The capability for enforcement facilities of the Department of the California Highway Patrol to communicate with a vehicle equipped with the device.
(B)CA Vehicle Code § 26708(b)(11)(B) The capability for electronic toll and traffic management on public or private roads or facilities.
(12)CA Vehicle Code § 26708(b)(12) A portable Global Positioning System (GPS), which may be mounted in a seven-inch square in the lower corner of the windshield farthest removed from the driver or in a five-inch square in the lower corner of the windshield nearest to the driver and outside of an airbag deployment zone, if the system is used only for door-to-door navigation while the motor vehicle is being operated.
(13)Copy CA Vehicle Code § 26708(b)(13)
(A)Copy CA Vehicle Code § 26708(b)(13)(A) A video event recorder with the capability of monitoring driver performance to improve driver safety, which may be mounted in a seven-inch square in the lower corner of the windshield farthest removed from the driver, in a five-inch square in the lower corner of the windshield nearest to the driver and outside of an airbag deployment zone, or in a five-inch square mounted to the center uppermost portion of the interior of the windshield. As used in this section, “video event recorder” means a video recorder that continuously records in a digital loop, recording audio, video, and G-force levels, but saves video only when triggered by an unusual motion or crash or when operated by the driver to monitor driver performance.
(B)CA Vehicle Code § 26708(b)(13)(A)(B) A vehicle equipped with a video event recorder shall have a notice posted in a visible location which states that a passenger’s conversation may be recorded.
(C)CA Vehicle Code § 26708(b)(13)(A)(C) Video event recorders shall store no more than 30 seconds before and after a triggering event.
(D)CA Vehicle Code § 26708(b)(13)(A)(D) The registered owner or lessee of the vehicle may disable the device.
(E)CA Vehicle Code § 26708(b)(13)(A)(E) The data recorded to the device is the property of the registered owner or lessee of the vehicle.
(F)CA Vehicle Code § 26708(b)(13)(A)(F) When a person is driving for hire as an employee in a vehicle with a video event recorder, the person’s employer shall provide unedited copies of the recordings upon the request of the employee or the employee’s representative. These copies shall be provided free of charge to the employee and within five days of the request.
(14)Copy CA Vehicle Code § 26708(b)(14)
(A)Copy CA Vehicle Code § 26708(b)(14)(A) A video event recorder in a commercial motor vehicle with the capability of monitoring driver performance to improve driver safety, which may be mounted no more than two inches below the upper edge of the area swept by the windshield wipers, and outside the driver’s sight lines to the road and highway signs and signals. Subparagraphs (B) to (F), inclusive, of paragraph (13) apply to the exemption provided by this paragraph.
(B)CA Vehicle Code § 26708(b)(14)(A)(B) Except as provided in subparagraph (C), subparagraph (A) shall become inoperative on the following dates, whichever date is later:
(i)CA Vehicle Code § 26708(b)(14)(A)(B)(i) The date that the Department of the California Highway Patrol determines is the expiration date of the exemption from the requirements of paragraph (1) of subdivision (e) of Section 393.60 of Title 49 of the Code of Federal Regulations, as renewed in the notice of the Federal Motor Carrier Safety Administration on pages 21791 and 21792 of Volume 76 of the Federal Register (April 18, 2011).
(ii)CA Vehicle Code § 26708(b)(14)(A)(B)(ii) The date that the Department of the California Highway Patrol determines is the expiration date for a subsequent renewal of an exemption specified in clause (i).
(C)CA Vehicle Code § 26708(b)(14)(A)(C) Notwithstanding subparagraph (B), subparagraph (A) shall become operative on the date that the Department of the California Highway Patrol determines is the effective date of regulations revising paragraph (1) of subdivision (e) of Section 393.60 of Title 49 of the Code of Federal Regulations to allow the placement of a video event recorder at the top of the windshield on a commercial motor vehicle.
(c)CA Vehicle Code § 26708(c) Notwithstanding subdivision (a), transparent material may be installed, affixed, or applied to the topmost portion of the windshield if the following conditions apply:
(1)CA Vehicle Code § 26708(c)(1) The bottom edge of the material is at least 29 inches above the undepressed driver’s seat when measured from a point five inches in front of the bottom of the backrest with the driver’s seat in its rearmost and lowermost position with the vehicle on a level surface.
(2)CA Vehicle Code § 26708(c)(2) The material is not red or amber in color.
(3)CA Vehicle Code § 26708(c)(3) There is no opaque lettering on the material and any other lettering does not affect primary colors or distort vision through the windshield.
(4)CA Vehicle Code § 26708(c)(4) The material does not reflect sunlight or headlight glare into the eyes of occupants of oncoming or following vehicles to any greater extent than the windshield without the material.
(d)CA Vehicle Code § 26708(d) Notwithstanding subdivision (a), clear, colorless, and transparent material may be installed, affixed, or applied to the front side windows, located to the immediate left and right of the front seat if the following conditions are met:
(1)CA Vehicle Code § 26708(d)(1) The material has a minimum visible light transmittance of 88 percent.
(2)CA Vehicle Code § 26708(d)(2) The window glazing with the material applied meets all requirements of Federal Motor Vehicle Safety Standard No. 205 (49 C.F.R. 571.205), including the specified minimum light transmittance of 70 percent and the abrasion resistance of AS–14 glazing, as specified in that federal standard.
(3)CA Vehicle Code § 26708(d)(3) The material is designed and manufactured to enhance the ability of the existing window glass to block the sun’s harmful ultraviolet A rays.
(4)CA Vehicle Code § 26708(d)(4) The driver has in his or her possession, or within the vehicle, a certificate signed by the installing company certifying that the windows with the material installed meet the requirements of this subdivision and the certificate identifies the installing company and the material’s manufacturer by full name and street address, or, if the material was installed by the vehicle owner, a certificate signed by the material’s manufacturer certifying that the windows with the material installed according to manufacturer’s instructions meet the requirements of this subdivision and the certificate identifies the material’s manufacturer by full name and street address.
(5)CA Vehicle Code § 26708(d)(5) If the material described in this subdivision tears or bubbles, or is otherwise worn to prohibit clear vision, it shall be removed or replaced.
(e)CA Vehicle Code § 26708(e) Notwithstanding subdivision (a), clear, colorless, and transparent material may be installed, affixed, or applied to the windshield, side, or rear windows of a motor vehicle if the following conditions are met:
(1)CA Vehicle Code § 26708(e)(1) The material has a minimum visible light transmittance of 88 percent.
(2)CA Vehicle Code § 26708(e)(2) The window glazing with the material applied meets all requirements of Federal Motor Vehicle Safety Standard No. 205 (49 C.F.R. 571.205), including the specified minimum light transmittance of 70 percent and the abrasion resistance of AS–14 glazing, as specified in that federal standard.
(3)CA Vehicle Code § 26708(e)(3) The material is designed and manufactured to enhance the ability of the existing window glass to block the sun’s harmful ultraviolet A rays.
(4)CA Vehicle Code § 26708(e)(4) The driver has in his or her possession, or within the vehicle, a certificate signed by a licensed dermatologist certifying that the person should not be exposed to ultraviolet rays because of a medical condition that necessitates clear, colorless, and transparent film material to be installed on the windshield, side, or rear windows.
(5)CA Vehicle Code § 26708(e)(5) If the material described in this subdivision tears or bubbles, or is otherwise worn to prohibit clear vision, it shall be removed or replaced.
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(Amended by Stats. 2017, Ch. 210, Sec. 1. (AB 1303) Effective January 1, 2018.)

Section § 26708.2

Explanation

This section outlines the requirements for sun screening devices allowed on vehicle windows. These devices must be easily removable and can use frames, temporary fasteners, or roller shades. If the material is transparent, it should be green, gray, or neutral smoke in color with at least 35% light passing through. Devices with patterns must maintain uniformity, with at least 35% of the area open. Reflective qualities on any surface should not exceed 35%.

Sun screening devices permitted by paragraph (10) of subdivision (b) of Section 26708 shall meet the following requirements:
(a)CA Vehicle Code § 26708.2(a) The devices shall be held in place by means allowing ready removal from the window area, such as a frame, a rigid material with temporary fasteners, or a flexible roller shade.
(b)CA Vehicle Code § 26708.2(b) Devices utilizing transparent material shall be green, gray, or a neutral smoke in color and shall have a luminous transmittance of not less than 35 percent.
(c)CA Vehicle Code § 26708.2(c) Devices utilizing nontransparent louvers or other alternating patterns of opaque and open sections shall have an essentially uniform pattern over the entire surface, except for framing and supports. At least 35 percent of the device area shall be open and no individual louver or opaque section shall have a projected vertical dimension exceeding 3/16 inch.
(d)CA Vehicle Code § 26708.2(d) The devices shall not have a reflective quality exceeding 35 percent on either the inner or outer surface.
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(Added by Stats. 1984, Ch. 74, Sec. 2.)

Section § 26708.5

Explanation

This California vehicle law states that you cannot put any kind of transparent material on your car's windshield or windows that alters their color or blocks the light from passing through, with certain exceptions explained in another section. However, you can use tinted safety glass if it meets U.S. safety standards and is installed in the right locations according to those rules.

(a)CA Vehicle Code § 26708.5(a) No person shall place, install, affix, or apply any transparent material upon the windshield, or side or rear windows, of any motor vehicle if the material alters the color or reduces the light transmittance of the windshield or side or rear windows, except as provided in subdivision (b), (c), or (d) of Section 26708.
(b)CA Vehicle Code § 26708.5(b) Tinted safety glass may be installed in a vehicle if (1) the glass complies with motor vehicle safety standards of the United States Department of Transportation for safety glazing materials, and (2) the glass is installed in a location permitted by those standards for the particular type of glass used.
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(Amended by Stats. 1998, Ch. 476, Sec. 2. Effective January 1, 1999.)

Section § 26708.7

Explanation

This law allows law enforcement vehicles operated by government agencies to have window tinting or glazing without following the usual California restrictions. It's specifically for vehicles used by police officers when doing their jobs.

Notwithstanding any other law, a vehicle operated and owned or leased by a federal, state, or local agency, department, or district, that employs peace officers, as defined by Chapter 4.5 (commencing with Section 830) of Title 3 of Part 2 of the Penal Code, for use by those peace officers in the performance of their duties, is exempt from California law, and regulations adopted pursuant thereto, prohibiting or limiting material that may be placed, displayed, installed, affixed, or applied to the side or rear windows, commonly referred to as window tinting or glazing.
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(Added by Stats. 2012, Ch. 171, Sec. 1. (AB 2660) Effective January 1, 2013.)

Section § 26709

Explanation

This law requires all motor vehicles registered outside California and motorcycles in California to have a rear-view mirror that lets the driver see at least 200 feet behind the vehicle. Other vehicles in California need at least two mirrors, including one on the left side. Vehicles like buses, and those carrying loads that block the rear view, must have mirrors on both sides. This rule doesn't apply if the visibility block is caused by passengers in a car. Autonomous vehicles driven without human intervention are also exempt from this requirement, as long as federal laws allow it.

(a)Copy CA Vehicle Code § 26709(a)
(1)Copy CA Vehicle Code § 26709(a)(1) Every motor vehicle registered in a foreign jurisdiction and every motorcycle subject to registration in this state shall be equipped with a mirror so located as to reflect to the driver a view of the highway for a distance of at least 200 feet to the rear of such vehicle.
(2)CA Vehicle Code § 26709(a)(2) Every motor vehicle subject to registration in this state, except a motorcycle, shall be equipped with not less than two mirrors, including one affixed to the left-hand side.
(b)CA Vehicle Code § 26709(b) The following described types of motor vehicles, of a type subject to registration, shall be equipped with mirrors on both the left- and right-hand sides of the vehicle so located as to reflect to the driver a view of the highway through each mirror for a distance of at least 200 feet to the rear of such vehicle:
(1)CA Vehicle Code § 26709(b)(1) A motor vehicle so constructed or loaded as to obstruct the driver’s view to the rear.
(2)CA Vehicle Code § 26709(b)(2) A motor vehicle towing a vehicle and the towed vehicle or load thereon obstructs the driver’s view to the rear.
(3)CA Vehicle Code § 26709(b)(3) A bus or trolley coach.
(c)CA Vehicle Code § 26709(c) The provisions of subdivision (b) shall not apply to a passenger vehicle when the load obstructing the driver’s view consists of passengers.
(d)CA Vehicle Code § 26709(d) This section does not apply to an autonomous vehicle, as defined in Section 38750, that is not capable of operation by a human driver seated in the vehicle, provided that this exemption is consistent with, or authorized by, any applicable federal law, regulation, or exemption thereto.
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(Amended by Stats. 2021, Ch. 428, Sec. 7. (SB 570) Effective January 1, 2022.)

Section § 26710

Explanation

This California law makes it illegal to drive a car on a highway if the windshield or rear window is in poor condition, making it hard to see the road. Additionally, specific rules apply to certain vehicles that must meet federal standards. If a police officer finds a vehicle with a defective windshield or rear window, the driver must fix it within 48 hours. The officer can ask the driver to appear in court and show proof that the issue has been resolved.

(a)CA Vehicle Code § 26710(a) It is unlawful to operate any motor vehicle upon a highway when the windshield or rear window is in such a defective condition as to impair the driver’s vision either to the front or rear.
(b)CA Vehicle Code § 26710(b) Notwithstanding subdivision (a), it is unlawful to operate any motor vehicle described in Section 34500 upon a highway when the condition of the windshield is other than described in Section 393.60(c) of Title 49 of the Code of Federal Regulations.
(c)CA Vehicle Code § 26710(c) In the event any windshield or rear window fails to comply with this code the officer making the inspection shall direct the driver to make the windshield and rear window conform to the requirements of this code within 48 hours. The officer may also arrest the driver and give them notice to appear and further require the driver or the owner of the vehicle to produce in court satisfactory evidence that the windshield or rear window has been made to conform to the requirements of this code.
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(Amended by Stats. 2022, Ch. 295, Sec. 16. (AB 2956) Effective January 1, 2023.)

Section § 26711

Explanation

This law specifies that any bus or trolley coach registered on or after January 1, 1960, that operates in urban and suburban areas, must have movable eyeshades to protect the driver’s eyes from the sun while driving.

Every bus or trolley coach, except those first registered prior to January 1, 1960, and engaged in urban and suburban service as defined in Section 35107, shall be equipped with movable eyeshades of sufficient size to shade the eyes of the operator of a bus or trolley coach while it is being driven facing the sun.
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(Amended by Stats. 1963, Ch. 661.)

Section § 26712

Explanation

If you're using a passenger vehicle to transport people for hire, it needs to have a working defrosting device to clear the windshield of snow, ice, frost, fog, or moisture inside the vehicle.

However, this requirement does not apply to autonomous vehicles that can't be driven by a person inside, as long as such vehicles comply with federal laws or exemptions.

(a)CA Vehicle Code § 26712(a) Every passenger vehicle used or maintained for the transportation of persons for hire, compensation, or profit shall be equipped with a defrosting device that is adequate to remove snow, ice, frost, fog, or internal moisture from the windshield.
(b)CA Vehicle Code § 26712(b) This section does not apply to an autonomous vehicle, as defined in Section 38750, that is not capable of operation by a human driver seated in the vehicle, provided that this exemption is consistent with, or authorized by, any applicable federal law, regulation, or exemption thereto.
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(Amended by Stats. 2021, Ch. 428, Sec. 8. (SB 570) Effective January 1, 2022.)