Opinion
KENNARD, J.Our state Constitution allows cities and counties to enact and enforce local ordinances so long as they are “not in conflict” with the state’s “general laws.” (Cal. Const., art. XI, § 7.) Any conflicting ordinance is preempted by state law and thus void.
At issue here is a city ordinance allowing forfeiture to the city of any vehicle used to commit certain acts made criminal by state law. The Court of Appeal held that state law preempts the city ordinance. We agree.
I.
Plaintiff Kendra O’Connell filed this taxpayer action (Code Civ. Proc., § 526a) against the City of Stockton and its city attorney (City) challenging *1066the constitutionality of a City ordinance labeled “Seizure and Forfeiture of Nuisance Vehicles.” Plaintiff sought to enjoin the City’s enforcement of the ordinance. The trial court sustained the City’s demurrer to plaintiff’s complaint, allowing plaintiff leave to amend her complaint. When plaintiff did not do so, the trial court dismissed the lawsuit.
On plaintiff’s appeal, the Court of Appeal reversed. It held that the forfeiture ordinance violated procedural due process because it failed to provide for a reasonably prompt postseizure probable cause hearing on the City’s right to hold a vehicle pending its forfeiture. The Court of Appeal also held that the forfeiture ordinance was preempted by specific state law provisions governing vehicle forfeiture. This conclusion conflicted with Horton v. City of Oakland (2000) 82 Cal.App.4th 580 [98 Cal.Rptr.2d 371], in which a different Court of Appeal held that a vehicle forfeiture ordinance enacted by the City of Oakland, and similar to the one at issue here, was not preempted by state law. We granted review to resolve the conflict.1
H.
Part XXV of chapter 5 of the Stockton Municipal Code is entitled “Seizure And Forfeiture Of Nuisance Vehicles.” The term “forfeiture,” as used here, means that the government assumes title to property used to further some illegal purpose. (See United States v. Bajakajian (1998) 524 U.S. 321 [141 L.Ed.2d 314, 118 S.Ct. 2028]; Bennis v. Michigan (1996) 516 U.S. 442 [134 L.Ed.2d 68, 116 S.Ct. 994]; Calero-Toledo v. Pearson Yacht Leasing Co. (1974) 416 U.S. 663, 682 [40 L.Ed.2d 452, 94 S.Ct. 2080].)
The ordinance at issue provides for the forfeiture of “[a]ny vehicle used to solicit an act of prostitution, or to acquire or attempt to acquire any controlled substance,” with “[a]ll right, title, and interest” thereafter vesting in the City. (Stockton Mun. Code, §§ 5-1000, 5-1002, italics added.) A vehicle so used may be seized by a peace officer (1) with a court order; (2) incident to an arrest or a search conducted with a search warrant; or (3) with probable cause to believe the vehicle was used in the specified *1067crimes. (Id., § 5-1003.) Within one year of police seizure of a vehicle, either the Stockton City Attorney or the San Joaquin County District Attorney “shall file a petition for forfeiture with the Superior Court of San Joaquin County.” (Id., § 5-1006, subd. (a); see id., § 5-1006, subd. (b).) The prosecuting agency must then give notice of the intended forfeiture proceedings to interested parties, advising them of their rights to file claims with the San Joaquin County Superior Court challenging the forfeiture. (Id., § 5-1006, subd. (c).)
A trial of the vehicle forfeiture can be before either a court or a jury. The City has “the burden of proving by a preponderance of the evidence” that the vehicle was used for one of the prohibited purposes set out in the ordinance. (Stockton Mun. Code, § 5-1006, subd. (f).) Forfeited vehicles are to be sold; the proceeds are used first to pay any “bona fide or innocent purchaser, conditional sales vendor, mortgagee or lien holder” of the vehicle, when such payment is ordered by the prosecuting agency. (Id., § 5-1008, subd. (a).) After paying the costs of publishing the notice of the forfeiture action and of storing, repairing and selling the vehicle (id., § 5-1008, subd. (b)), remaining funds are distributed in proportionate shares to the involved prosecuting and law enforcement agencies. (Id., § 5-1008, subd. (c).)
We now turn to the principles governing state law preemption of local ordinances.
in.
We have in the past articulated the following principles on state law preemption of local ordinances. “Under article XI, section 7 of the California Constitution, ‘[a] county or city may make and enforce within its limits all local, police, sanitary, and other ordinances and regulations not in conflict with general [state] laws.’ [f] ‘If otherwise valid local legislation conflicts with state law, it is preempted by such law and is void.’ [Citations.] [fj ‘A conflict exists if the local legislation “ ‘duplicates, contradicts, or enters an area fully occupied by general law, either expressly or by legislative implication.’ ” ’ [Citations.]” (Sherwin-Williams Co. v. City of Los Angeles (1993) 4 Cal.4th 893, 897 [16 Cal.Rptr.2d 215, 844 P.2d 534], italics added, fh. omitted (Sherwin-Williams)', see also American Financial Services Assn. v. City of Oakland (2005) 34 Cal.4th 1239, 1251 [23 Cal.Rptr.3d 453, 104 P.3d 813] (American Financial).) We explain the italicized terms below.
A local ordinance duplicates state law when it is “coextensive” with state law. (Sherwin-Williams, supra, 4 Cal.4th at pp. 897-898, citing In re Portnoy (1942) 21 Cal.2d 237, 240 [131 P.2d 1] [as “finding ‘duplication’ where local legislation purported to impose the same criminal prohibition that general law imposed”].)
*1068A local ordinance contradicts state law when it is inimical to or cannot be reconciled with state law. (Sherwin-Williams, supra, 4 Cal.4th at p. 898, citing Ex parte Daniels (1920) 183 Cal. 636, 641-648 [192 P. 442] [as finding “ ‘contradiction’ ” in a local ordinance that set the maximum speed limit for vehicles below that set by state law].)
A local ordinance enters a field fully occupied by state law in either of two situations—when the Legislature “expressly manifest^]” its intent to occupy the legal area or when the Legislature “impliedly” occupies the field. (Sherwin-Williams, supra, 4 Cal.4th at p. 898; see also 8 Witkin, Summary of Cal. Law (10th ed. 2005) Constitutional Law, § 986, p. 551 [“[W]here the Legislature has manifested an intention, expressly or by implication, wholly to occupy the field . . . municipal power [to regulate in that area] is lost.”].)
When the Legislature has not expressly stated its intent to occupy an area of law, we look to whether it has impliedly done so. This occurs in three situations: when “ ‘(1) the subject matter has been so fully and completely covered by general law as to clearly indicate that it has become exclusively a matter of state concern; (2) the subject matter has been partially covered by general law couched in such terms as to indicate clearly that a paramount state concern will not tolerate further or additional local action; or (3) the subject matter has been partially covered by general law, and the subject is of such a nature that the adverse effect of a local ordinance on the transient citizens of the state outweighs the possible benefit to the’ locality.” (Sherwin-Williams, supra, 4 Cal.4th at p. 898.)
With respect to the implied occupation of an area of law by the Legislature’s full and complete coverage of it, this court recently had this to say: “ ‘Where the Legislature has adopted statutes governing a particular subject matter, its intent with regard to occupying the field to the exclusion of all local regulation is not to be measured alone by the language used but by the whole purpose and scope of the legislative scheme.’ ” (American Financial, supra, 34 Cal.4th at p. 1252, quoting Tolman v. Underhill (1952) 39 Cal.2d 708, 712 [249 P.2d 280].) We went on to say: “ ‘State regulation of a subject may be so complete and detailed as to indicate an intent to preclude local regulation.’ ” (American Financial, supra, at p. 1252.) We thereafter observed: “ ‘Whenever the Legislature has seen fit to adopt a general scheme for the regulation of a particular subject, the entire control over whatever phases of the subject are covered by state legislation ceases as far as local legislation is concerned.’ ” (Id. at p. 1253, quoting In re Lane (1962) 58 Cal.2d 99, 102 [22 Cal.Rptr. 857, 372 P.2d 897].) When a local ordinance is identical to a state statute, it is clear that “ ‘the field sought to be covered by the ordinance has already been occupied’ ” by state law. (American Financial, supra, at p. 1253.)
*1069“[W]hen local government regulates in an area over which it traditionally has exercised control, such as the location of particular land uses, California courts will presume, absent a clear indication of preemptive intent from the Legislature, that such regulation is not preempted by state statute.” (Big Creek Lumber Co. v. County of Santa Cruz (2006) 38 Cal.4th 1139, 1149 [45 Cal.Rptr.3d 21, 136 P.3d 821].)
With these principles in mind, we consider below whether state law preempts the City’s vehicle forfeiture ordinance.
IV.
As we noted earlier, the City’s ordinance permits the forfeiture of any vehicle used to “to solicit an act of prostitution, or to acquire or attempt to acquire any controlled substance.” (Stockton Mun. Code, § 5-1000, italics added.) We turn first to the latter aspect. The Court of Appeal concluded that this part of the ordinance was preempted by certain provisions of the California Uniform Controlled Substances Act (UCSA) (Health & Saf. Code, § 11000 et seq.) authorizing forfeiture of vehicles used in specified serious drug crimes. We too look to the UCSA as the source of state law preemption of this part of the City’s forfeiture ordinance. But unlike the Court of Appeal, we do not rely solely on the UCSA’s vehicle forfeiture provisions; instead, we consider the UCSA as a whole, a comprehensive scheme defining and setting the penalties for crimes involving controlled substances. This requires an analysis of various UCSA provisions pertinent here. It makes for tedious reading, but it is central to a resolution of the preemption issue presented.
As defined in the UCSA, controlled substances include every “drug, substance, or immediate precursor” (Health & Saf. Code, § 11007) listed in one of five schedules set out in Health and Safety Code sections 11054 through 11058. The schedules include all commonly known controlled substances, such as marijuana, cocaine, heroin, and methamphetamine, as well as many others less familiar. The UCSA not only regulates the lawful use and distribution of controlled substances (see Health & Saf. Code, §§ 11100, 11210-11211), but also defines as criminal offenses the unlawful possession and distribution of specified controlled substances (see Health & Saf. Code, §§ 11350-11361).
In addition, the UCSA sets forth the penalties for criminal violations of its provisions. For example, unlawful possession of “not more than 28.5 grams of marijuana” is a misdemeanor offense carrying a maximum fine of $100 and no jail time. (Health & Saf. Code, § 11357, subd. (b).) For more serious possessory drug crimes and those involving manufacture, sale, or possession for sale, the UCSA prescribes felony penalties. (See Health & Saf. Code, *1070§§ 11350, subd. (a) [providing that certain specified possessory drug crimes “shall be punished by imprisonment in the state prison”], 11351.5 [punishment for the sale of cocaine base is “imprisonment. . . for . . . three, four, or five years”], 11352, subd. (a) [providing state prison terms of three, four, or five years for transporting, importing into California, selling, furnishing, administering, or giving away certain controlled substances].)
In Health and Safety Code section 11470, the Legislature specifies the following as subject to forfeiture: Controlled substances “manufactured, distributed, dispensed, or acquired in violation of this division” (id., subd. (a)); the raw materials, products and equipment used, or intended to be used, to manufacture, compound, process, deliver, import or export controlled substances in violation of the UCSA (Health & Saf. Code, § 11470, subd. (b)); items used as containers for the property described in subdivisions (a) and (b) (id., subd. (c)); “[a]ll books, records, and research products and materials, including formulas, microfilm, tapes, and data which are used, or intended for use, in violation of this division” (id., subd. (d)); moneys, negotiable instruments, securities and other valuable items furnished or intended to be furnished in illicit exchanges of specified controlled substances as well as all proceeds traceable to such exchanges (id., subd. (f)); and the real property of persons convicted of specified drug crimes involving such property, except for real property “used as a family residence or for other lawful purposes, or which is owned by two or more persons, one of whom had no knowledge of its unlawful use” (id., subd. (g)).
Subdivision (e) of Health and Safety Code section 11470 governs forfeitures involving boats, airplanes, and vehicles. It makes the following subject to forfeiture: “The interest of any registered owner of a boat, airplane, or any vehicle [other than certain vehicles used for agricultural purposes] which has been used as an instrument to facilitate the manufacture of or possession for sale or sale of specified amounts of certain controlled substances including 14.25 grams or more of heroin or cocaine base, or a substance containing 14.25 grams or more of heroin or cocaine base, or 28.5 grams or more of all schedule I controlled substances except marijuana, peyote, or psilocybin, or 10 pounds or more of marijuana, peyote, or psilocybin, or methamphetamine in any amount. (Health & Saf. Code, § 11470, subd. (e), italics added.) Health and Safety Code section 11488.4, subdivision (i)(l), states that forfeiture of airplanes, boats, and vehicles requires proof beyond a reasonable doubt that the property to be forfeited was used for one of the specified drug offenses. Thus, as relevant here, under the UCSA a vehicle can be forfeited to a government entity only upon proof beyond a reasonable doubt that the vehicle was “used as an instrument to facilitate the manufacture of, or possession for sale or sale” of specified amounts of certain controlled substances. (Health & Saf. Code, § 11470, subd. (e).)
*1071In Health and Safety Code section 11469, the Legislature has established “guidelines” that local law enforcement and prosecutorial agencies should follow in enforcing the state law provisions regarding the seizure and forfeiture of property used to commit drug crimes in California. It points out, among other things, that “[l]aw enforcement is the principal objective of forfeiture,” and that “[pjotential revenue [to be derived from property forfeiture] must not be allowed to jeopardize the effective investigation and prosecution of criminal offenses.” (Health & Saf. Code, § 11469, subd. (a).) And it reminds prosecutors that they should “[wjhenever appropriate . . . seek criminal sanctions as to the underlying criminal acts which give rise to the forfeiture action.” (Id., subd. (c).)
Recognizing that forfeiture can sometimes lead to harsh results, the Legislature included this cautionary language in subdivision (j) of Health and Safety Code section 11469: “Although civil forfeiture is intended to be remedial by removing the tools and profits from those engaged in the illicit drug trade, it can have harsh effects on property owners in some circumstances. Therefore, law enforcement shall seek to protect the interests of innocent property owners, guarantee adequate notice and due process to property owners, and ensure that forfeiture serves the remedial purpose of the law.”
We summarize: State law, through the UCSA (Health & Saf. Code, § 11000 et seq.), defines controlled substances, regulates their use, and sets penalties for their unlawful possession and distribution. Among the available penalties is vehicle forfeiture but, as pointed out earlier, only upon proof beyond a reasonable doubt of the vehicle’s use to facilitate certain serious drug crimes (manufacture, sale, or possession for sale of methamphetamine, or of heroin or cocaine base, marijuana, peyote, or psilocybin and other schedule I controlled substances in specified amounts). By way of contrast, the City’s ordinance allows the harsh penalty of vehicle forfeiture upon proof merely by a preponderance of evidence of a vehicle’s use simply “to attempt to acquire” any amount of any controlled substance (for instance, less than 28.5 grams of marijuana, a low-grade misdemeanor warranting only a $100 fine and no jail time and not subject to vehicle forfeiture under the UCSA).
The comprehensive nature of the UCSA in defining drug crimes and specifying penalties (including forfeiture) is so thorough and detailed as to manifest the Legislature’s intent to preclude local regulation. The UCSA accordingly occupies the field of penalizing crimes involving controlled substances, thus impliedly preempting the City’s forfeiture ordinance to the extent it calls for the forfeiture of vehicles used “to acquire or attempt to acquire” (Stockton Mun. Code, § 5-1000) controlled substances regulated under the UCSA. (See American Financial, supra, 34 Cal.4th at p. 1252; Tolman v. Underhill, supra, 39 Cal.2d at p. 712.)
*1072Relevant to this conclusion is our decision in In re Lane, supra, 58 Cal.2d 99. That case involved a statewide statutory scheme that, we held, fully occupied an area of regulation, thereby preempting a municipal ordinance covering the same legal area. The statewide statutory scheme consisted of comprehensive criminal proscriptions against specified sexual conduct, and the local law was a Los Angeles City ordinance criminalizing sexual intercourse between persons not married to each other. Although the state statutory scheme included laws prohibiting prostitution, pimping and pandering, bigamy, acts against public decency, rape, and various sex crimes against children, it did not include any offense for “simple fornication or adultery.” (In re Lane, supra, 58 Cal.2d at p. 104.) This court reasoned that the exclusion of fornication or adultery from the comprehensive state law scheme showed the Legislature’s intent that “such conduct shfould] not be criminal.” {Ibid.)
Here too the Legislature’s comprehensive enactment of penalties for crimes involving controlled substances, but exclusion from that scheme of any provision for vehicle forfeiture for simple possessory drug offenses, manifests a clear intent to reserve that severe penalty for very serious drug crimes involving the manufacture, sale, or possession for sale of specified amounts of certain controlled substances.
We now consider the Court of Appeal’s decision in Horton v. City of Oakland, supra, 82 Cal.App.4th 580, which involved an ordinance similar to the one at issue here, but which reached a conclusion contrary to that of the Court of Appeal in this case. Horton held that the UCSA’s forfeiture provisions did not preempt Oakland’s ordinance allowing forfeiture of vehicles used to acquire or attempt to acquire controlled substances. It reasoned that the ordinance covered an area of law “untouched by statewide legislation” because the UCSA’s forfeiture provisions, which apply only to persons possessing for sale or selling illicit drugs, were “silent with regard to vehicles used by drug buyers.” {Horton v. City of Oakland, supra, 82 Cal.App.4th at p. 586, italics added.) In focusing solely on the UCSA’s forfeiture provisions, Horton failed to consider the UCSA’s comprehensive scheme of drug crime penalties, which include forfeiture of various items of property, including vehicles, when used in specified serious drug offenses. Thus, Horton never addressed whether the UCSA as a whole constitutes a comprehensive scheme that fully occupies the field of penalizing crimes involving controlled substances. Because of our conclusion in this case that the UCSA’s comprehensive regulation of drug offenses as a whole impliedly preempts the City’s ordinance allowing forfeiture of vehicles used in acquiring controlled substances, we need not resolve whether the UCSA’s forfeiture provisions alone *1073establish implied state preemption, the question entertained by the Courts of Appeal in this case and in Horton.2
We now turn to the other aspect of the City’s forfeiture ordinance, allowing for the forfeiture of any vehicle used to solicit prostitution. The Court of Appeal below held that the Legislature had expressly preempted that field through the interplay of two Vehicle Code provisions: Vehicle Code section 21 (precluding local regulation in areas covered by "the Vehicle Code absent express legislative authorization) and Vehicle Code section 22659.5, subdivision (a) (setting up a five-year pilot program for local entities to declare vehicles used in specified prostitution-related offenses public nuisances). The Court of Appeal was correct, as we explain below.
Vehicle Code section 21 states: “Except as otherwise expressly provided, the provisions of this code are applicable and uniform throughout the State and in all counties and municipalities therein, and no local authority shall enact or enforce any ordinance on the matters covered by this code unless expressly authorized herein.” (Italics added.) Thus, under section 21, local regulation of any “matter[]” covered by this state’s Vehicle Code is prohibited unless the Legislature has expressly allowed local regulation in that field. (See Rumford v. City of Berkeley (1982) 31 Cal.3d 545, 550 [183 Cal.Rptr. 73, 645 P.2d 124]; Save the Sunset Strip Coalition v. City of West Hollywood (2001) 87 Cal.App.4th 1172, 1177-1178 [105 Cal.Rptr.2d 172].)
The matter that is covered by the Vehicle Code and that is pertinent here is the authority of local government entities to declare a vehicle used in soliciting prostitution to be a public nuisance. That topic is addressed in the Vehicle Code by subdivision (a) of section 22659.5. That provision allows a city or a county to “adopt an ordinance establishing a five-year pilot program that implements procedures for declaring any motor vehicle a public nuisance” when used in the commission of specified criminal conduct, including acts covered in Penal Code section 647, subdivision (b), which prohibits engaging in acts of prostitution as well as soliciting or agreeing to engage in such acts. (Veh. Code, § 22659.5, subd. (a), italics added.)
Subdivision (b) of Vehicle Code section 22659.5 permits local ordinances adopted under the statutory scheme to “include procedures to *1074enjoin and abate the declared [vehicular] nuisance by ordering the defendant not to use the vehicle again,” and it allows for the forcible removal of vehicles. Under subdivision (c) of section 22659.5, any action taken to abate a public nuisance is limited to those “specified in subdivision (b),” that is, an injunction against or abatement of a declared nuisance or the removal of a nuisance vehicle. Section 22659.5 contains no language, however, that would allow a local entity such as the City here to seize and forfeit a vehicle that, through its use in soliciting prostitution, has created a public nuisance.
We summarize: Vehicle Code section 21 precludes local regulation of “matters covered” by the Vehicle Code, absent express legislative authorization. The use of vehicles in soliciting prostitution is a matter that the Vehicle Code covers in section 22659.5, which establishes a five-year pilot program under which cities and counties may treat as a public nuisance any vehicle used in soliciting prostitution, but that pilot program does not allow for forfeiture of the vehicle. There being no express legislative authorization for any other form of local regulation of the matter covered by Vehicle Code section 22659.5, Vehicle Code section 21 precludes an ordinance like the City’s, which seeks to regulate vehicle use in soliciting prostitution by requiring forfeiture of the vehicle. Under Vehicle Code section 21, therefore, the City’s ordinance is expressly preempted by state law.
In addressing a similar ordinance adopted by the City of Oakland, the Court of Appeal in Horton v. City of Oakland, supra, 82 Cal.App.4th 580, reached a contrary conclusion. First, asking whether Vehicle Code section 22659.5 had impliedly preempted the Oakland ordinance allowing forfeiture of any vehicle used to solicit prostitution, Horton concluded it had not, because Oakland had not adopted the five-year pilot program authorized by that statute. (Horton, supra, 82 Cal.App.4th at p. 589.) Horton then considered whether there was express preemption under Vehicle Code section 21. As we have seen, absent express legislative authorization of local regulation in a legal area, Vehicle Code section 21 prohibits such regulation pertaining to any “matters” covered by the Vehicle Code. And section 22659.5 of the Vehicle Code specifically covers abatement of public nuisance vehicles used to solicit prostitution, the same subject of the Oakland ordinance at issue in Horton. But Horton reasoned that because Vehicle Code section 22659.5 allowed local entities to abate as a public nuisance any vehicle used to solicit prostitution only if the local entity participated in “an optional and limited pilot program” authorized by section 22659.5, that state statute, according to Horton, did not cover the same subject as the Oakland ordinance, which was not based on the pilot program. (Horton, supra, 82 Cal.App.4th at p. 591.) We disagree.
Vehicle Code section 22659.5, and the vehicle forfeiture ordinances in this case and in Horton v. City of Oakland, supra, 82 Cal.App.4th 580, *1075both address the same subject: abatement of a public nuisance created by vehicles used in soliciting prostitution. As the Court of Appeal here noted, the purpose of the state Legislature’s enactment of section 22659.5 was to ascertain through a five-year pilot program “ ‘whether declaring motor vehicles a public nuisance when used in the commission of acts of prostitution would have a substantial effect upon the reduction of prostitution in neighborhoods, thereby serving the local business owners and citizens of our urban communities.’ ” (Quoting Stats. 1993, ch. 485, § 1, pp. 2595-2596.) Because the Vehicle Code addresses the same subject—nuisance abatement of vehicles used to solicit prostitution—as the City’s ordinance at issue, and the state Legislature has in no other statute provided for local regulation in this area, the City’s ordinance is preempted by state law.3
We also reject the City’s characterization of Vehicle Code section 22659.5 as a “special statute” that cannot support a claim of preemption, because such claims must be “founded upon a ‘conflict with general laws' " (Baldwin v. County of Tehama (1994) 31 Cal.App.4th 166, 177 [36 Cal.Rptr.2d 886], italics added). Vehicle Code section 22659.5 allows, but does not require, a city or a county to adopt an ordinance declaring vehicles used in specified sex offenses to be a public nuisance in accord with the terms of the statute. But this statute is, contrary to the City’s contention, a general rather than a special law because it applies generally throughout the state; it is not limited to certain listed cities and counties. Thus, Vehicle Code section 22659 cannot be characterized as special legislation. (See Cal. Const., art. IV, § 16 [authorizing the enactment of statutes applicable to particular cities or counties]; White v. State of California (2001) 88 Cal.App.4th 298, 305 [105 Cal.Rptr.2d 714] [Legislature must have rational basis for singling out a city or county to be “ ‘affected by [a special] statute’ ”]; Baldwin, supra, at p. Ill [uncodified enactments granting limited powers over groundwaters to “specifically identified special districts” described as “ ‘special acts’ ”].)
We now turn to the City’s arguments made in overall support of its vehicle forfeiture ordinance. According to the City, the ordinance does not conflict with any state law, and therefore a necessary precondition to state preemption is lacking. We disagree. As discussed earlier, the ordinance conflicts with state law because anyone using a vehicle “to solicit an act of prostitution, or to acquire or attempt to acquire any controlled substance” (Stockton Mun. Code, § 5-1000)—conduct exclusively within the purview of state law—is subject to penalties in excess of those prescribed by the Legislature.
The City also argues that because it operates under a charter rather than under the general laws governing California cities and therefore meets the *1076requirement of Government Code section 34101 for a “chartered city,” our state Constitution allows it to adopt and enforce ordinances in conflict with state law so long as the subject matter constitutes a “municipal affair[]” rather than a “statewide concern.” (See Cal. Const., art. XI, § 5; Johnson v. Bradley (1992) 4 Cal.4th 389, 399 [14 Cal.Rptr.2d 470, 841 P.2d 990].) The City asserts that its vehicle forfeiture ordinance deals with a municipal affair, namely, abating the nuisance caused by vehicular traffic associated with the “illicit commercial activity” of obtaining drugs or soliciting prostitution within the City’s boundaries. We are not persuaded, as explained below.
The illicit commercial activities—prostitution and trafficking in controlled substances—that are the focus of the City’s vehicle forfeiture ordinance are matters of statewide concern that our Legislature has comprehensively addressed through various provisions of this state’s Penal and Vehicle Codes, leaving no room for further regulation at the local level. One of the lesser harms associated with these crimes is the traffic congestion that may result when vehicles are used to solicit acts of prostitution or to buy or sell drugs illegally on city streets. Although traffic congestion is a local problem that cities ordinarily are authorized to address, they may not do so by means of an ordinance that, by allowing forfeiture of a vehicle used to commit a specific state law violation, impinges on an area fully occupied or exclusively covered by state law.4
Disposition
The judgment of the Court of Appeal is affirmed.
George, C. J., Werdegar, J., and Moreno, J., concurred.
In granting review in this case, we asked the parties to brief these three issues: “(1) Does California state law preempt provisions of the City of Stockton Municipal Code pertaining to ‘Seizure and Forfeiture of Nuisance Vehicles’? (2) Do the Stockton Municipal Code provisions allowing the commencement of vehicle forfeiture proceedings ‘as soon as practicable but in any case within one year’ satisfy the state and federal constitutional requirements of procedural due process? (3) Do the municipal code provisions allocating proceeds of vehicle forfeitures to the offices of the San Joaquin County District Attorney and the Stockton City Attorney violate state or federal constitutional guarantees of substantive or procedural due process?” Because we conclude here that state law preempts the provisions of the Stockton Municipal Code pertaining to seizure and forfeiture of nuisance vehicles, thus invalidating those provisions and rendering them unenforceable, we need not address the remaining two issues.
The dissent, relying on the Court of Appeal decision in Horton, asserts there is no conflict between the City’s ordinance and the UCSA because the former covers drug buyers while the latter is silent on that topic. Not so. As comprehensive statewide legislation that broadly addresses the problems arising from illicit drugs, the UCSA, through its generally applicable laws against possession or attempted possession of all controlled substances, imposes criminal penalties on those who, in the words of the City’s forfeiture ordinance, “acquire or attempt to acquire any controlled substance.” (Stockton Mun. Code, § 5-1000.)
To the extent it is contrary to our conclusions here, we disapprove Horton v. City of Oakland, supra, 82 Cal.App.4th 580.
Because the determination to preclude or to allow local regulation in a field addressed by state law resides exclusively with the state Legislature, that body can, of course, expressly authorize local entities to enact ordinances such as the one in this case that we conclude is preempted under existing law.