Can a Texas constable use automated speed cameras to mail out speeding tickets without an officer stopping the driver?

Plain-English summary

A Bexar County constable set up a portable camera system that detects speeding vehicles, photographs the driver's face and license plate, and mails out citations without any officer stopping the driver. The Bexar County Criminal District Attorney, who prosecutes those citations, doubted that Texas law allows it and asked the Attorney General whether a constable can use such a system.

The AG said no. The reasoning runs in steps:

Constables have only the powers the law grants them. Constables are county officers, and county officials possess only powers granted in express words or necessarily implied, powers that are "indispensable," not merely convenient. Any reasonable doubt is resolved against an implied grant.

Statutory silence is not permission. The Transportation Code bars cities from running automated speed-camera systems (§ 542.2035) and bars local authorities from running red-light camera systems (§ 707.020). The constable argued that because those bans target municipalities and local authorities, constables are free to use cameras. The AG rejected that. Home-rule cities have all power not denied to them, so the Legislature limits them by prohibition; counties and their officers are the opposite and need an affirmative grant. The red-light camera ban actually withdrew an authority that had once been granted to local authorities, which only underscores that constables never had it.

The citation process requires an arrest first. Chapter 543 lets an officer issue a speeding citation only after a threshold detention: the officer arrests the violator, then either takes the person to a magistrate or issues a notice to appear once the person signs a written promise to appear. Mailing a citation from camera images "involve[s] neither physical force nor submission to the assertion of authority," so it is not an arrest, and it conflicts with Chapter 543.

General peace-keeping duties do not fill the gap. Articles 2A.051(1) and (2) of the Code of Criminal Procedure tell constables to preserve the peace and prevent crime, but they do not themselves make a particular method lawful; they let officers act within established authority, which here requires an arrest.

The AG concluded that the lack of any law authorizing camera enforcement is dispositive, and it did not need to reach the other concerns the DA raised (such as constitutional issues or the absence of commissioners court approval).

What this means for you

If you are a constable or county law-enforcement official

Under this opinion, you cannot use an automated camera system to mail speeding citations. The Transportation Code's speeding-citation process starts with an actual detention or arrest of the driver, and a mailed citation generated from camera images is not an arrest. General duties to "preserve the peace" do not supply the missing authority. If you are running such a program, this opinion concludes it is unauthorized.

If you are a prosecutor reviewing camera-generated citations

The opinion supports declining to prosecute speeding citations produced by a constable's automated camera system, because the citations do not arise from the statutorily required detention. The AG framed the absence of authorizing law as dispositive.

If you received a mailed speeding citation from a camera

The opinion concludes a constable lacks authority to issue speeding citations this way. It is an interpretation of Texas law, not a ruling in any specific case, so anyone contesting a citation should raise it with the court handling the matter and, where appropriate, counsel.

If you are a policymaker

The AG repeated its 2016 observation that when the Legislature has authorized automated traffic-enforcement technology, it has done so specifically, spelling out the circumstances and permissible uses. Camera-based speed enforcement by constables is not among the authorized uses. Changing that would take legislative action.

Common questions

Q: Can a Texas constable mail speeding tickets using speed cameras?
A: No. The AG concluded a constable lacks authority to use an automated traffic-enforcement system to issue speeding citations by mail.

Q: The camera ban is written for cities. Does that mean constables can use cameras?
A: No. The AG explained that statutory silence is not permission for county officers. Cities have all powers not denied them, so they are limited by prohibitions; counties and constables need an affirmative grant of authority, which does not exist here.

Q: Why does issuing a citation require stopping the driver?
A: Chapter 543 builds the speeding-citation process on a threshold detention or arrest, after which the officer takes the person to a magistrate or issues a notice to appear on a signed promise to appear. Mailing a citation from camera images is not an arrest.

Q: Don't constables have general authority to prevent crime?
A: Yes, but the AG held that articles 2A.051(1) and (2) do not by themselves authorize a particular method. They let officers act within established authority, which for speeding citations requires an arrest.

Q: Did the AG address constitutional problems with the cameras?
A: No. The AG found the lack of authorizing law dispositive and did not need to reach the constitutional concerns or the issue of commissioners court approval.

Background and statutory framework

Constables are county officers (Tex. Const. art. V, § 24) and peace officers (Code Crim. Proc. art. 2A.001(2)) who may enforce traffic laws, including the maximum-speed requirement (Transp. Code § 545.351(a)). But county officials have only powers expressly granted or necessarily implied, as the Texas Supreme Court held in State v. Hollins (quoting Foster v. City of Waco), and reasonable doubt is resolved against implied authority.

The Transportation Code bars municipalities from automated speed-enforcement systems (§ 542.2035) and bars local authorities from photographic traffic-signal (red-light) systems (§ 707.020, defined in §§ 707.001(3), (5), 541.304(3)). The AG explained that those prohibitions do not imply constable authority. Home-rule cities have "the full power of local self-government" and "all power not denied" (City of Laredo v. Laredo Merchants Ass'n; Loc. Gov't Code § 51.072(a)), so the Legislature limits them by prohibition, while counties and their officers need affirmative grants (City of Laredo v. Webb County). The red-light prohibition repealed an authority once granted to local authorities for red-light cameras (Watson v. City of Southlake), reinforcing that constables never had camera-enforcement power.

Chapter 543 (§§ 543.001-.011) sets the citation process. A constable "may" make a warrantless arrest for a traffic violation (§ 543.001); "may" is discretionary (Gov't Code § 311.016(1)). Once an arrest is made, the officer takes the person to a magistrate or issues a notice to appear (§§ 543.002-.003), and speeding requires a notice to appear if the person signs a written promise to appear (§ 543.004(a)(2), (c); § 543.005). Courts describe these as temporary detentions ending in a notice to appear (Azeez v. State; State v. Kurtz). Mailing a citation from camera images is not an arrest, because it involves "neither physical force nor submission to the assertion of authority" (Carson v. State), so it conflicts with Chapter 543. The general peace-keeping duties in Code of Criminal Procedure article 2A.051(1)-(2) do not make a particular method lawful. The AG concluded, echoing its 2016 opinion KP-0076, that the absence of any authorizing law is dispositive.

Citations and references

Statutes:
- Tex. Transp. Code ch. 543 — arrest and citation procedures for traffic offenses
- Tex. Transp. Code § 542.2035 — prohibition on municipal automated speed enforcement
- Tex. Transp. Code § 707.020 — prohibition on photographic traffic-signal enforcement

Key cases:
- State v. Hollins, 620 S.W.3d 400 (Tex. 2020) — county officials have only express or necessarily implied powers
- City of Laredo v. Laredo Merchs. Ass'n, 550 S.W.3d 586 (Tex. 2018) — home-rule cities have all power not denied
- Carson v. State, 65 S.W.3d 774 (Tex. App.—Fort Worth 2001, no pet.) — mailing a citation is not an arrest

Source

• Landing page: https://www.texasattorneygeneral.gov/opinions/ken-paxton/kp-0510
• Original PDF: https://www.texasattorneygeneral.gov/sites/default/files/opinion-files/opinion/2026/kp-0510.pdf

Original opinion text

February 2, 2026

The Honorable Joe Gonzales
Bexar County Criminal District Attorney
101 West Nueva
San Antonio, Texas 78205

Opinion No. KP-0510
Re: Legality of an automated traffic-enforcement system for speeding citations (RQ-0584-KP)

Dear Mr. Gonzales:

You ask about a constable's authority to employ an automated traffic-enforcement system. For context, you explain that a constable has implemented a portable traffic system that uses cameras to detect vehicles exceeding "a predetermined speed" and capture "images of the driver's face and license plate" to "issue citations by mail without interaction between officers and drivers." Brief at 2–4. Given that your office is "tasked with reviewing and prosecuting these citations," however, you raise a concern that Texas law does not authorize these systems "in the manner and means employed." Id. at 2. You thus seek "an opinion on the legality of a county officer's use of . . . [said] system to issue speeding citations." Request Letter at 1.

A constable's actions must be grounded in the Constitution or statutes.

We begin with the reality that constables are county officers. See, e.g., Tex. Att'y Gen. Op. No. GA-0869 (2011) at 2 (citing TEX. CONST. art. V, § 24). Indeed, "a constable's office is a part of a county's efforts to compel observance of or compliance with state law." Tex. Att'y Gen. Op. No. KP-0445 (2023) at 4. Constables may therefore enforce traffic laws and regulations, see, e.g., Tex. Att'y Gen. Op. No. JM-761 (1987) at 3—including the prohibition on "driv[ing] at a speed greater than is reasonable and prudent under the circumstances," TEX. TRANSP. CODE § 545.351(a).

But the authority of county officers is not unbridled. In State v. Hollins, for example, the Texas Supreme Court made clear that county officials "possess[] only those powers 'granted in express words' or 'necessarily or fairly implied in' an express grant—powers 'not simply convenient' but 'indispensable.'" 620 S.W.3d 400, 406 (Tex. 2020) (per curiam) (quoting Foster v. City of Waco, 255 S.W. 1104, 1105–06 (Tex. 1923)); see also, e.g., Tex. Att'y Gen. Op. No. GA-0656 (2008) at 1 (explaining that "[t]he powers of . . . a constable are limited"). Thus, "[a]ny reasonable doubt [that exists] must be resolved against an implied grant of authority." Hollins, 620 S.W.3d at 409.

Neither do the express prohibitions related to automated enforcement systems counsel otherwise. As you correctly highlight, section 542.2035 of the Transportation Code prohibits municipalities from implementing or operating "a photographic device, radar device, laser device, or other electrical or mechanical device designed to[] record the speed of a motor vehicle[] and obtain . . . photographs or other recorded images of[] the vehicle," the vehicle's license plate, or the vehicle's operator. TEX. TRANSP. CODE § 542.2035(a)–(b); accord Brief at 3. But the Legislature's silence regarding constables should not be mistaken as permission. Unlike counties and their officials, a home-rule municipality "possesses the 'full power of local self-government,'" City of Laredo v. Laredo Merchs. Ass'n, 550 S.W.3d 586, 592 (Tex. 2018) (quoting TEX. LOC. GOV'T CODE § 51.072(a)), and "ha[s] all power not denied by the Constitution or state law," id. These entities therefore look to the Legislature for "specific limitations on their power," not "specific grants of authority." City of Laredo v. Webb Cnty., 220 S.W.3d 571, 576 (Tex. App.—Austin 2007, no pet.).

Section 707.020 of the Transportation Code is also of no moment. To start, that statute prohibits a "local authority" from "implement[ing] or operat[ing] a photographic traffic signal enforcement system with respect to a highway or street under the [authority's] jurisdiction." TEX. TRANSP. CODE § 707.020. However, a "[p]hotographic traffic signal enforcement system" is one "that[] consists of a camera system and vehicle sensor installed to exclusively work in conjunction with an electrically operated traffic-control signal," id. § 707.001(3) (emphasis added)—i.e., "a . . . device that alternately directs traffic to stop and to proceed," id. § 541.304(3); see also id. § 707.001(5) (incorporating section 541.304 of the Transportation Code). This prohibition thus pertains to "red-light cameras for traffic enforcement." Watson v. City of Southlake, 594 S.W.3d 506, 512 (Tex. App.—Fort Worth 2019, pet. denied).

Nor does the breadth of this prohibition, which applies beyond municipalities, alter the reality that constables "possess[] only those powers 'granted in express words' or 'necessarily or fairly implied in' an express grant." Hollins, 620 S.W.3d at 406 (quoting Foster, 255 S.W. at 1105–06); see also, e.g., Tex. Att'y Gen. Op. No. GA-0656 (2008) at 2. Section 707.020 was not enacted on an empty backdrop; instead, the Legislature had previously authorized local authorities to use red-light cameras. See generally Act of May 27, 2007, 80th Leg., R.S., ch. 1149, § 1, 2007 Tex. Gen. Laws 3924, 3924–29. But the Legislature in 2019 repealed this express authority by enacting the red-light prohibition in section 707.020. Act of May 17, 2019, 86th Leg., R.S., ch. 372, § 2, 2019 Tex. Gen. Laws 675, 675. As a result, this statute serves only to highlight the withdrawal of an authority that was never granted to constables in the first place—again demonstrating that the Legislature's silence cannot be taken as permission. See TEX. TRANSP. CODE §§ 541.002 (defining "local authority"), 707.001 (defining "local authority" to have the meaning in section 541.002).

[Footnote: To be sure, section 707.020 provides "unmistakable clarity" sufficient to limit a home-rule municipality's powers. See Laredo Merchs. Ass'n, 550 S.W.3d at 593 (quoting Lower Colo. River Auth. v. City of San Marcos, 523 S.W.2d 641, 645 (Tex. 1975)).]

Subchapter A of Chapter 543 of the Transportation Code does not authorize the use of an automated traffic-enforcement system to issue a speeding citation by mail.

Chapter 543 of the Transportation Code details the authority for officers to issue speeding citations. See generally id. §§ 543.001–.011. As a peace officer, TEX. CODE CRIM. PROC. art. 2A.001(2), a constable "may arrest without warrant a person found committing a violation" of subtitle C, title 7 of the Transportation Code—where speeding resides. TEX. TRANSP. CODE § 543.001; see id. § 545.351 ("Maximum Speed Requirement"). The use of "may" indicates that the power to arrest is discretionary or permissive. See TEX. GOV'T CODE § 311.016(1) (defining "[m]ay"); Hildebrand v. State, No. 14-06-00531-CR, 2007 WL 5659038, at *4–5 (Tex. App.—Houston [14th Dist.] Oct. 18, 2007, no pet.) (mem. op., not designated for publication) (stating that officers must follow the procedures in other provisions of subchapter A of Chapter 543 "if they arrest an individual for committing an offense").

Once an officer decides to make an arrest, of course, the Transportation Code details the alternatives that follow: Either the alleged violator is presented to a magistrate or issued a "notice to appear." TEX. TRANSP. CODE §§ 543.002–.003; see Hildebrand, 2007 WL 5659038, at *5. A speeding violation is one of the few offenses that requires an officer to issue a notice to appear if "the [alleged violator] makes a written promise to appear in court as provided by [s]ection 543.005." TEX. TRANSP. CODE § 543.004(a)(2), (c). Section 543.005 outlines the requirements "the person arrested" and the "arresting officer" must satisfy for the alleged violator "[t]o secure release" from "custody." Id. § 543.005. The subchapter therefore "authorize[s] the 'arrest' of speeders" for the duration of time "it takes for the arresting officer to issue a citation (assuming the motorist is willing to sign the promise to appear)." Azeez, 248 S.W.3d at 190; see also, e.g., State v. Kurtz, 152 S.W.3d 72, 79 (Tex. Crim. App. 2004) (describing "arrests" under subchapter A of Chapter 543 as "temporary detentions" that may end with a notice to appear), superseded on other grounds by statute, Act of May 25, 2005, 79th Leg., R.S., ch. 1015, § 1, 2005 Tex. Gen. Laws 3433, 3433.

[Footnote: We use "notice to appear" interchangeably with a criminal "citation," as courts and a prior Attorney General opinion have done. See, e.g., Azeez v. State, 248 S.W.3d 182, 190 (Tex. Crim. App. 2008); State v. Dominguez, 666 S.W.3d 633, 634 (Tex. Crim. App. 2023) (Keller, P.J., dissenting); Tex. Att'y Gen. Op. No. KP-0477 (2025) at 2 n.2.]

[Footnote: The mandatory notice to appear for speeding is subject to Chapter 703 of the Transportation Code when a person is a resident of or operates a vehicle licensed in another state or country. TEX. TRANSP. CODE § 543.004(b). See generally id. §§ 703.001–.004 ("Nonresident Violator Compact of 1977").]

Stated differently, a speeding citation is issued only after a threshold detention of an alleged violator. See generally TEX. TRANSP. CODE §§ 543.003–.005. In the situation you describe, however, the automated traffic-enforcement system results in the "issu[ance] [of] citations by mail without interaction between officers and drivers." Brief at 2. "[T]he mailing or receipt of a Class C misdemeanor citation" does not, of course, "constitute[] an arrest." Carson v. State, 65 S.W.3d 774, 782 (Tex. App.—Fort Worth 2001, no pet.). Indeed, the mailing and receipt of a citation "involve[s] neither physical force nor submission to the assertion of authority." Id. The described system thus conflicts with subchapter A of Chapter 543. Accordingly, a constable's authority to issue speeding citations does not countenance the use of an automated traffic-enforcement system to issue citations by mail.

Articles 2A.051(1) or 2A.051(2) of the Code of Criminal Procedure provide no authority to employ an automated traffic-enforcement system to issue speeding citations by mail.

Briefing received in response to your request suggests that other authority exists to employ the system to issue speeding citations by mail. Specifically, one briefer cites to articles 2A.051(1) and (2)'s predecessors. First Constable Brief at 2–3; cf. Howard v. State, 227 S.W.3d 794, 799 (Tex. App.—Dallas 2006, pet. ref'd) (applying these articles' predecessors to a traffic violation). This contention, however, is unavailing.

Article 2A.051(1) requires constables to "preserve the peace within the officer's jurisdiction using all lawful means." TEX. CODE CRIM. PROC. art. 2A.051(1). Relatedly, constables shall "in every case authorized by" the Code of Criminal Procedure "interfere without a warrant to prevent or suppress crime." Id. art. 2A.051(2). Yet these articles do not themselves make a particular "means" lawful or authorize a particular "case . . . [to] interfere without a warrant." Id. art. 2A.051(1)–(2). Instead, they permit peace officers to exercise law enforcement powers within the confines of established authority. Id. That constables have discretion when carrying out their duties, see Tex. Att'y Gen. Op. No. GA-0189 (2004) at 4, does not amount to unlimited authority. As discussed, the Legislature outlined the requirements that a peace officer must meet to issue a speeding citation in lieu of presenting an alleged offender to a magistrate. See TEX. TRANSP. CODE §§ 543.001–.011; supra pp. 3–4. That process invariably begins with an arrest, TEX. TRANSP. CODE §§ 543.003–.005, and the cited articles in the Code of Criminal Procedure do not provide express or implied authority for a constable to use the automated system you describe.

The lack of any law authorizing use of the system to issue speeding citations by mail is dispositive.

Our observation in 2016 carries as much weight today as it did then: "[W]hen the Legislature has authorized automated photographic or similar technology for the enforcement of traffic or vehicle laws, it has been specific about the circumstances and permissible uses of the technology." Tex. Att'y Gen. Op. No. KP-0076 (2016) at 2. We are aware of no authority permitting a constable to employ an automated traffic-enforcement system to issue speeding citations by mail, and this lack of authority is dispositive. Cf. id. at 1–3.

[Footnote: This conclusion obviates the need to address the other concerns—including potential constitutional concerns or the absence of approval from the Bexar County Commissioners Court—regarding the use of an automated traffic-enforcement system to issue speeding citations. See Brief at 1–2, 4.]

S U M M A R Y

A constable lacks authority to employ an automated traffic-enforcement system to issue speeding citations by mail.

Very truly yours,

KEN PAXTON
Attorney General of Texas

BRENT WEBSTER, First Assistant Attorney General
LESLEY FRENCH, Chief of Staff
D. FORREST BRUMBAUGH, Deputy Attorney General for Legal Counsel
JOSHUA C. FIVESON, Chair, Opinion Committee
AMANDA K. ROMENESKO, Assistant Attorney General, Opinion Committee