California Bans Plate Covers Except a Sticker-Only Security Shield

Section 5201(a) sets the display standard every other rule hangs off. License plates, including temporary license plates, shall at all times be securely fastened to the vehicle for which they are issued so as to prevent the plates from swinging, shall be mounted in a position so as to be clearly visible, and so that the characters are upright and display from left to right, and shall be maintained in a condition so as to be clearly legible. The rear plate must be mounted not less than 12 inches nor more than 60 inches from the ground, and the front plate not more than 60 inches. Section 5200 fixes where they go: when two plates are issued, one in front and the other in the rear; when only one is issued it goes on the rear, unless it is a truck tractor plate displayed under section 4850.5.

The covering rule is subdivision (c), and it is written as a prohibition with two narrow carve-outs. The first is a whole-vehicle cover: installing one over a lawfully parked vehicle to protect it from the weather and the elements is not a violation, and a peace officer or a regularly salaried public-agency employee designated to enforce parking laws, including local ordinances, may temporarily remove so much of the cover as is necessary to inspect any license plate, tab, or indicia of registration. The second is the "license plate security cover," and its boundaries are exact: it must not obstruct or impair the recognition of the license plate information, including the issuing state, license plate number, and registration tabs, and it must be limited to the area directly over the top of the registration tabs. The final sentence removes any doubt: no portion of a license plate security cover shall rest over the license plate number. A full-plate shield does not fit that description whether it is clear, smoked, or angled, because it is not limited to the tab area.

Subdivision (d) is a second and independent ban aimed at machine readability rather than human readability. It reaches a casing, shield, frame, border, shade, tint, product, or other device that obstructs or impairs the reading or recognition of a plate by an electronic device operated by state or local law enforcement, by an electronic device operated in connection with a toll road, high-occupancy toll lane, toll bridge, or other toll facility, or by a remote emission sensing device as specified in Health and Safety Code sections 44081 and 44081.6. That is why a dealership frame can be a problem in California even though a person standing behind the car can read every character: if it crowds the issuing state or defeats a FasTrak or automated plate reader, it is caught by (d) regardless of what (c) says about covers.

Section 5201 was last amended by Stats. 2025, Ch. 179 (AB 1085), effective January 1, 2026. As it now reads, subdivision (a) applies its fastening, visibility and legibility requirements to temporary license plates by name, and subdivision (b) requires temporary license plates to be replaced with permanent license plates upon receipt of the permanent plates, with the temporary plates destroyed at that time. Section 5202 works alongside it: a plate must be attached upon receipt and remain attached during the period of its validity, and a special permit or temporary license plate issued in lieu of permanent plates must be displayed until it expires or the permanent plates are received, whichever occurs first.

The mounting heights have a long list of commercial exceptions, all in subdivision (a). A tow truck or repossessor tow vehicle may carry its rear plate on the left-hand side of the mast assembly at the rear of the cab, from 12 to 90 inches off the ground. The same 12 to 90 inch band covers a tank vehicle hauling hazardous waste as defined in Health and Safety Code section 25117 or hauling asphalt material, a truck tractor mounting at the rear of the cab, a manufacturer-designed garbage, rubbish or refuse collection vehicle used regularly for that purpose, and a two-axle livestock trailer. A dump bed motortruck fitted with a trailing, load bearing swing axle gets the widest allowance: more than 12 inches but not more than 107 inches.

Subdivision (e) is the disability accommodation, and it is the one place California tolerates an obstructed rear plate. It is not a violation for a wheelchair lift or wheelchair carrier to obstruct or impair the reading of the rear plate if the vehicle owner holds a special identification license plate under section 5007 or the wheelchair user holds a distinguishing placard under section 22511.55, and the operator displays a DMV-designed decal carrying the vehicle plate number on the rear window, in a location the DMV sets in consultation with the California Highway Patrol. Where that decal is displayed, the code requirements for illuminating the plate and plate number do not apply. The accommodation does not extend to a front plate. Because Vehicle Code section 21 makes the code uniform statewide and bars local ordinances on matters it covers, none of these rules change from one California city to another.

A plate cover or frame problem is charged under section 5201 as an infraction. 1 provides that it is unlawful and constitutes an infraction to violate or fail to comply with any provision of the code unless the code says otherwise, and nothing in Division 17 elevates section 5201. Section 42001(a) sets the base fine at not more than $100 for a first infraction, not more than $200 for a second occurring within one year of a prior infraction that resulted in a conviction, and not more than $250 for a third or subsequent infraction within one year of two or more prior convictions, before the penalty assessments a California court adds to the base.

Where an officer writes the citation as a notice to correct violation under Vehicle Code Article 4, commencing with section 40610, section 40611 requires the court clerk to collect a $25 transaction fee for each violation upon proof of correction. Of that, $10 per citation is allocated monthly at 33 percent to the local government entity where the citation was issued, 34 percent to the State Penalty Fund established by Penal Code section 1464, and 33 percent to the county general fund, with the remainder going to the State Court Facilities Construction Fund.

No fee at all is imposed if the violation notice is processed only by the issuing agency and no record of the action is transmitted to the court. Enforcement is by any peace officer, and under section 5201(c)(1) a designated parking enforcement employee may also pull back part of a car cover to check the plate and tabs.