WESLEY, Circuit Judge:

Ronnie Bernacet appeals from a judgment of conviction entered against him in the United States District Court for the Southern District of New York (Laura Taylor Swain, Judge) following a one-day bench trial on October 25, 2011. Bernacet was convicted of one count of possessing a firearm following a conviction for a felony, in violation of 18 U.S.C. § 922(g)(1). The district court sentenced Bernacet to 57 months' imprisonment and three years' supervised release.

Bernacet asserts that (1) the use of a criminal history database search at a routine traffic checkpoint rendered the stop an unconstitutional seizure of his person; (2) the police lacked probable cause to believe that he was violating his parole; and (3) warrantless arrests for parole violations are unconstitutional in New York. We disagree and find that: (1) the criminal history database search was a de minimis extension of the constitutional traffic checkpoint; (2) the police had probable cause to believe that Bernacet was violating his parole; and (3) Bernacet's arrest was constitutional, notwithstanding state laws prohibiting officers from arresting parole violators without a warrant in the absence of a crime or offense. We therefore affirm the judgment of the district court.

Background

On October 5, 2010, New York Police Department ("NYPD") officers conducting a two-hour scheduled traffic-safety vehicle checkpoint in the Bronx stopped motorists to check their driver's licenses and vehicle registrations. They collected licenses from only the drivers and ran each driver's license through NYPD's "FINEST" system using a mobile device terminal ("MDT") in the squad car. This "generate[d] a report from the New York Statewide Police Information Network (`NYSPIN'), which includes data from multiple sources, including" Federal Bureau of Investigation ("FBI") databases, New York State law enforcement records, and New York Department of Motor Vehicle ("DMV") records. Callahan Dec. "An officer cannot ... elect to run a FINEST search from an MDT through some but not all of these databases." Id. It typically took less than one minute to run each of the license checks conducted at the stop. Id. Officer Patrick Callahan, who had conducted "approximately 100 vehicle safety checkpoints at that location" during his 22 years with the NYPD, ran licenses through the FINEST system. Id. The checkpoint resulted in two felony arrests, including Bernacet's.

Bernacet pulled up to the checkpoint at approximately 11:45 p.m. He gave his driver's license to Officer Ramon Garcia, who passed it to Callahan. When he ran Bernacet's license, Callahan noticed that Bernacet was on parole. Knowing that parolees in New York customarily have 9:00 p.m. curfews, he instructed Garcia to "check it out." Id. Garcia confronted Bernacet about his suspected parole violation. Garcia contends that Bernacet replied that "he forgot and was sorry." Garcia Dec. Bernacet "has claimed variously that he replied, `What, I'm on violation of parole?' and `I don't have a curfew my parole officer know I am here [sic].'" United States v. Bernacet, No. 11-cr-00107-LTS, 2011 WL 10895014, at *1, 2011 U.S. Dist. LEXIS 101258, at *3 (S.D.N.Y. Sept. 7, 2011) (citations omitted).

Garcia asked Bernacet to step out of the car. Garcia maintains that he then saw a handgun protruding from Bernacet's pocket; Bernacet alleges that the firearm was not discovered until Garcia frisked him. Id. Garcia then arrested Bernacet. A frisk incident to the arrest revealed a gravity knife in addition to the loaded, .25-caliber Armi-Galesi-Bresci semi-automatic pistol. After receiving his Miranda warnings, Bernacet made several incriminating statements. Id.

Discussion

Bernacet contends that the officers (1) should not have searched law enforcement databases at a traffic safety checkpoint, (2) did not have probable cause to believe that he was violating his parole, and (3) were not authorized under state law to arrest him for a parole violation, and that therefore his arrest was unconstitutional. Success on any of these claims would require suppression of the handgun and incriminating statements Bernacet made pursuant to his arrest. We hold that the NYSPIN search was reasonable; the officers had probable cause to believe that Bernacet was violating his parole; and his warrantless arrest was not unconstitutional. The district court's decision to admit the handgun and Bernacet's incriminating statements was therefore proper. Accordingly, we affirm Bernacet's conviction.

I. Use of Drivers' Licenses to Search Law Enforcement Databases at the Traffic Stop Was Reasonable

Bernacet does not challenge the legality of the traffic stop itself, and he does not argue that the search of law enforcement databases unconstitutionally infringed his privacy interests.1 Rather, he contends that the NYPD's search of law enforcement databases at a traffic stop was constitutionally unreasonable because it was not closely related to the purpose of the checkpoint. In light of the de minimis intrusion on motorists that was imposed by the law enforcement database search, the traffic stop as conducted was constitutional.

A. The Government's Interests Outweighed the Drivers' Interests in This Fixed, Traffic-Safety Checkpoint

The Supreme Court has endorsed the government's interest in conducting a fixed checkpoint to monitor traffic safety as a benefit that outweighs drivers' privacy interests. In Delaware v. Prouse, 440 U.S. 648, 663, 99 S.Ct. 1391, 59 L.Ed.2d 660 (1979), the Court struck down roving stops of automobiles without any particularized suspicion. However, the Court suggested that "[q]uestioning of all oncoming traffic at roadblock-type stops" was a lawful alternative method to provide for traffic safety. Id. In City of Indianapolis v. Edmond, 531 U.S. 32, 47, 121 S.Ct. 447, 148 L.Ed.2d 333 (2000), the Court struck down drug interdiction checkpoints while noting that its holding "d[id] nothing to alter the constitutional status of ... the type of traffic [safety] checkpoint that we suggested would be lawful in Prouse."

In this case, the traffic safety checkpoint was conducted at an "accident prone location in the impact zone," and officers processed 49 cars in two hours. Vehicle Checkpoint Form.2 The waiting times that each car experienced are fairly characterized as "brief" and "no more onerous than [delays] that typically accompany normal traffic congestion." Illinois v. Lidster, 540 U.S. 419, 426, 124 S.Ct. 885, 157 L.Ed.2d 843 (2004); see also Mich. Dep't of State Police v. Sitz, 496 U.S. 444, 452, 110 S.Ct. 2481, 110 L.Ed.2d 412 (1990) (stating that the "`objective' intrusion" on motorists subjected to checkpoint stops is "measured by the duration of the seizure and the intensity of the investigation"). This traffic safety checkpoint was thus lawful, and is not on its own challenged by Bernacet.

B. Gathering Additional Information Did Not Make the Stop Unconstitutional

Bernacet argues, however, that the addition of law enforcement database searches renders unconstitutional the otherwise lawful traffic checkpoint. The search of the NYSPIN databases took approximately one minute per motorist; of that one minute, some portion was consumed by the search of DMV records.3 Dist. Ct. Doc. 20-4. The fact that "ordinary criminal wrongdoing," Edmond, 531 U.S. at 38, 121 S.Ct. 447, was uncovered in the course of an otherwise lawful checkpoint designed for a permissible purpose does not invalidate the checkpoint or the arrest. Lidster, 540 U.S. at 423, 124 S.Ct. 885. The police encountered information suggesting that a parole violation was ongoing; the Fourth Amendment did not require them to ignore this information merely because the officers' primary focus was on traffic safety. "The law does not require the police to ignore evidence of other crimes in conducting legitimate roadblocks." United States v. Lopez, 777 F.2d 543, 547 (10th Cir.1985); see also United States v. Morales, 788 F.2d 883, 886 (2d Cir.1986).

The duration of the stop was not significantly increased by the fact that the MDTs search multiple databases, including law enforcement databases. Although our decision in United States v. Harrison, 606 F.3d 42 (2d Cir.2010), related to traffic stops instead of checkpoints, it applies with equal force in this context, where the initial stop is not challenged. In Harrison, we wrote that "an officer's inquiries into matters unrelated to the justification for the traffic stop ... do not convert the encounter into something other than a lawful seizure, so long as those inquiries do not measurably extend the duration of the stop." Id. at 45 (internal quotation marks and alteration omitted); see also Lidster, 540 U.S. at 427-28, 124 S.Ct. 885.

Finally, we note that Bernacet does not argue that the checkpoint was illegal in itself or that the stated purpose of protecting traffic safety in an accident prone location was pretextual. He argues, instead, that it was improper for the police, at a lawfully conducted traffic safety checkpoint, to search for parole status in addition to DMV records. If he were able to establish that the checkpoint was actually conducted for basic crime control purposes and not for vehicle safety reasons, then we would likely find the checkpoint unconstitutional. Edmond, 531 U.S. at 41, 121 S.Ct. 447.

II. Officers Had Probable Cause to Believe that Bernacet Was Violating His Parole

Bernacet contends that the officers lacked probable cause to believe that he was violating his parole because they had no evidence that he had a curfew as a condition of his parole. Bernacet points out that, although he did have a 9:00 p.m. curfew, curfews are not a mandatory condition of parole in New York State. N.Y. State Parole Handbook 2010 at 21-22. He avers that it was unreasonable for the police to assume that he had a 9:00 curfew as a condition of his parole. We disagree.

Callahan had probable cause if "the facts and circumstances within [his] knowledge and of which he had reasonably trustworthy information were sufficient to warrant a prudent man in believing that" Bernacet was committing a parole violation.4 Amore v. Novarro, 624 F.3d 522, 536 (2d Cir.2010) (alterations omitted) (quoting Beck v. Ohio, 379 U.S. 89, 91, 85 S.Ct. 223, 13 L.Ed.2d 142 (1964)). The district court appears to have based its holding on the facts that Callahan "knew that [Bernacet] was on parole. He knew that parolees are customarily subject to 9:00 p.m. curfew as a condition of their parole. He also knew that, when [Bernacet] was stopped at the checkpoint, the time was approximately 11:30 p.m." Bernacet, 2011 WL 10895014, at *3, 2011 U.S. Dist. LEXIS 101258, at *7.

Bernacet argues that there was no probable cause because (1) curfew is not a mandatory condition of parole and (2) the NYSPIN search result screenshot submitted to the court did not contain information related to the terms of Bernacet's parole. Otherwise, Bernacet "has not challenged the reasonableness of Officer Callahan's belief, established over the course of 20[sic] years of experience, that a 9:00 p.m. curfew is customarily imposed on parolees." Id. Although he had the opportunity, Bernacet declined to cross-examine Callahan about his affidavit. Callahan's affidavit is the only evidence on the record regarding the likelihood that a New York parolee had a 9:00 p.m. curfew.

We read Callahan's affidavit to suggest that a high percentage of New York parolees have 9:00 p.m. curfews. No evidence adduced at the suppression hearing suggests otherwise. Callahan's 22-year NYPD experience that "New York parolees customarily have a curfew [of] 9:00 p.m.," Callahan Dec., which Bernacet declined to challenge given the opportunity, constitutes "reasonably trustworthy information... sufficient to warrant a prudent man in believing" that such a curfew existed in this case. Amore, 624 F.3d at 536. The report from the NYSPIN database firmly established Bernacet's parole status and his presence on the road shortly before midnight established that he was breaking a 9:00 p.m. curfew if he had one. Taken together, this evidence was sufficient to provide Callahan with probable cause to believe that Bernacet was violating his parole.

III. Illegal Warrantless Arrests for Parole Violations Are not Unconstitutional Seizures

Bernacet contends that the fruits of a search incident to a warrantless arrest for a parole violation are inadmissible because New York has forbidden warrantless arrests for parole violations that are not independently crimes or offenses. We agree that Bernacet's arrest was illegal under New York law but conclude that it was constitutionally permissible. The exclusionary rule therefore does not apply.

A. New York Law Prohibited Bernacet's Warrantless Arrest for Violating His Curfew

The district court determined that Bernacet's arrest was permissible under New York law. Bernacet, citing People v. Bratton, 8 N.Y.3d 637, 838 N.Y.S.2d 828, 870 N.E.2d 146 (2007), contends that the district court erred. We agree that Bratton extends to arrests by police officers and that Bernacet's arrest was therefore unlawful under New York law.

In Bratton, the New York Court of Appeals held that warrantless arrests by parole officers for parole violations committed in their presence violate New York law if the parole violation does not otherwise constitute a crime or offense. Id. at 641, 838 N.Y.S.2d 828, 870 N.E.2d 146. Bratton, an Ithaca-based parolee, refused to permit two parole officers to enter his apartment to obtain a sample for a urinalysis test. Id. at 639, 838 N.Y.S.2d 828, 870 N.E.2d 146. Bratton attempted to leave; the parole officers arrested him. Id. at 639-40, 838 N.Y.S.2d 828, 870 N.E.2d 146. Relying heavily on the legislative history of the New York statutes permitting parole officers to make arrests, the Court of Appeals held that there was "a considered legislative choice" constricting the warrantless arrest authority of parole officers in New York. Id. at 640-643, 838 N.Y.S.2d 828, 870 N.E.2d 146. The Court of Appeals held that refusal of urinalysis was "not an offense within the meaning of section 10.00(1) of the [N.Y.] Penal Law ... that would independently justify a peace officer in making a warrantless arrest if committed in his presence." Id. at 643, 838 N.Y.S.2d 828, 870 N.E.2d 146. Bratton's custody was therefore unlawful and his charge of resisting arrest was dismissed. Id. at 641, 838 N.Y.S.2d 828, 870 N.E.2d 146.

Seeking to distinguish Bratton, the district court relied on its view that the statute authorizing parole officers to make warrantless arrests differs from that authorizing police officers to make warrantless arrests. Bernacet, 2011 WL 10895014, at *3, 2011 U.S. Dist. LEXIS 101258, at *9. However, "[t]he rules governing the manner in which a peace officer may make an arrest, pursuant to section 140.25, are the same as those governing arrests by police officers, as prescribed in section[s] 140.15 [and 140.10]." CPL N.Y. 140.27(1). The statutes conferring warrantless arrest authority on parole and police officers are identically worded:5 a police officer or a parole officer "may arrest a person for [a]ny offense when he has [probable] cause to believe that such person has committed such offense in his presence." CPL N.Y. 140.25(1)(a), 140.10(1)(a).

The authority to make a warrantless arrest for parole and police officers alike relies on New York's definition of an "offense." See Bratton, 8 N.Y.3d at 643, 838 N.Y.S.2d 828, 870 N.E.2d 146 (reading "offense" in CPL N.Y. 140.25(1)(a) to refer to N.Y. Penal L. § 10.00(1)). The Bratton Court held that the only parole violations that are "offenses" for the purpose of this statute are those that "would independently justify" a warrantless arrest even if they were not a violation of parole. Id. Staying out later than 9:00 p.m. does not qualify. Bernacet's arrest for his curfew violation was not authorized by New York law.

B. Bernacet's Arrest Was Constitutionally Permissible

But, not every arrest that is illegal under state law violates the United States Constitution. See, e.g., United States v. Wilson, 699 F.3d 235, 244 (2d Cir.2012). In Whren v. United States, 517 U.S. 806, 815, 116 S.Ct. 1769, 135 L.Ed.2d 89 (1996), the Supreme Court held that plainclothes police officers were constitutionally authorized to seize a vehicle and its occupants based on probable cause that the driver had committed a relatively minor traffic infraction, notwithstanding state regulations that permitted such officers to enforce traffic laws "only in the case of a violation that is so grave as to pose an immediate threat to the safety of others." Id. (internal quotation marks omitted, emphasis retained). The Court wrote, "[P]olice enforcement practices, even if they could be practicably assessed by a judge, vary from place to place and from time to time. We cannot accept that the search and seizure protections of the Fourth Amendment are so variable, and can be made to turn on such trivialities." Id. (internal citation omitted).

Based in part on this reasoning, in Virginia v. Moore, 553 U.S. 164, 167, 128 S.Ct. 1598, 170 L.Ed.2d 559 (2008), the Supreme Court upheld the arrest of a driver for driving on a suspended driver's license, despite Virginia laws requiring the officers to issue a summons instead of making an arrest when handling such an infraction. The Court held that "an arrest based on probable cause but prohibited by state law" is constitutional. Id. at 166, 128 S.Ct. 1598. Bernacet maintains that Moore does not apply to parole violations because not all such violations are defined as "crimes" or "offenses" under New York law, and further that parole violations should be treated differently, as a constitutional matter, from other types of infractions. Neither argument is persuasive.

1. Moore Applies to Arrests for Parole Violations

Bernacet asks us to hold that Moore applies to "crimes," "offenses," and "violations," but not to parole violations, which he asserts, are not all "offenses" or "crimes" under state law. He points to several cases that use various terms to categorize the types of infractions that support a constitutionally valid arrest.6 Aside from semantics, however, he does not identify a basis to distinguish parole violations from other relatively minor infractions that the Supreme Court has held can constitutionally support an arrest. These include minor misdemeanors and traffic offenses. For example, in Atwater v. City of Lago Vista, 532 U.S. 318, 323, 121 S.Ct. 1536, 149 L.Ed.2d 549 (2001), the Court held that the Fourth Amendment does not forbid "a warrantless arrest for a minor criminal offense, such as a misdemeanor seatbelt violation punishable only by a fine." See also Moore, 553 U.S. at 167, 128 S.Ct. 1598 (for driving on a suspended license).

It is true that state substantive criminal law can render an arrest unconstitutional by altering the legal status of the underlying conduct. For example, in New York police may constitutionally arrest a 21-year-old man based on probable cause to believe he has had sexual intercourse with a 16-year-old. See N.Y. Penal Law § 130.25. However, police could not constitutionally arrest the same 21-year-old man based on the same suspicions in Connecticut (where the age of consent is 16. Conn. Gen.Stat. § 53a-71(a)(1)).

However, the Fourth Amendment does not incorporate state procedural criminal law. "[W]hile States are free to regulate [warrantless] arrests however they desire, state restrictions do not alter the Fourth Amendment's protections." Moore, 553 U.S. at 176, 128 S.Ct. 1598. The legality of warrantless arrests for parole violations "var[ies] from place to place and from time to time," id. at 172, 128 S.Ct. 1598 (internal quotation marks omitted). In fact, even New York permitted such arrests before 1977. See Bratton, 8 N.Y.3d at 642-43, 838 N.Y.S.2d 828, 870 N.E.2d 146. "Fourth Amendment protections are not `so variable.'" Moore, 553 U.S. at 172, 128 S.Ct. 1598 (quoting Whren, 517 U.S. at 815, 116 S.Ct. 1769).

Under New York law, parole violations are not "offenses" or "crimes" for the purpose of determining whether officers are authorized to make a warrantless arrest of a person violating his parole. But this limitation on the power to arrest does not mean that violating parole does not implicate New York substantive law. The legality of Bernacet's arrest at New York law therefore does not end, or even inform, the constitutional inquiry. "Read together, Moore and Whren stand for the proposition that the Fourth Amendment does not generally incorporate local statutory or regulatory restrictions on seizures and that the violation of such restrictions will not generally affect the constitutionality of a seizure supported by probable cause." Wilson, 699 F.3d at 243. Bernacet's claim is of a constitutional dimension; it cannot be measured with a state law ruler.

2. Bernacet's Parole Violation Provided a Reasonable Ground for Arrest

Bernacet further contends that parole violations have a special status that takes them outside the ambit of Moore. We disagree.

First, even New York courts do not interpret Bratton as speaking to the constitutional validity of a warrantless arrest of a parole violator. For example, custody that is illegal solely because it is premised on an improper warrantless arrest does not necessarily provide grounds for habeas relief: that custody may violate state law, but it is not unconstitutional. People ex rel. Rouse v. N.Y. State Div. of Parole, 20 Misc.3d 926, 864 N.Y.S.2d 230, 235-36 (Sup.Ct. Bronx Cnty. July 25, 2008). Furthermore, before Bratton, the New York Appellate Division "focus[ed]... on the narrow question of whether a violation of the statute requiring the issuance of a parole violation warrant ... require[d] suppression ... [and] conclude[d] that it does not."7 People v. Dyla, 142 A.D.2d 423, 439, 536 N.Y.S.2d 799 (2d Dep't 1988). "[N]either the Federal nor the State Constitutions, according to their language and history, require the suppression of evidence gathered as a result of a `seizure' which is not `unreasonable' and hence not unconstitutional, solely on the grounds that the seizure may be considered violative of some State statute, ordinance or regulation."8 Id. at 434, 536 N.Y.S.2d 799 (citations omitted).

Second, New York has previously permitted warrantless arrests for all parole violations, suggesting that such arrests pose no inherent constitutional dilemma. Before 1978, "[i]n any case where a parole officer ha[d] [probable] cause to believe that [a] parolee ha[d] violated the conditions of his parole in an important respect, such parole officer [could] retake such parolee and cause him to be temporarily detained without a warrant." Former N.Y. Correct. L. §§ 216, 829(3) (both repealed 1978).9 Bratton acknowledges that "an exception to the warrant requirement for those violations taking place in a parole officer's presence [might] make sense," 8 N.Y.3d at 641, 838 N.Y.S.2d 828, 870 N.E.2d 146, but notes that there was "a considered legislative choice" to forbid this authority. Id. at 642, 838 N.Y.S.2d 828, 870 N.E.2d 146. The legislation has changed since 1978, but the constitutional analysis has not.

Third, parole violations are not inherently less serious than other minor offenses for which the Fourth Amendment permits warrantless arrests. The Supreme Court has held that warrantless arrests are lawful, for example, in the case of a mother arrested in front of her children for driving without a seatbelt (among other minor infractions), Atwater, 532 U.S. at 323-24, 121 S.Ct. 1536; for impersonating a police officer when helping a motorist change a tire, Devenpeck v. Alford, 543 U.S. 146, 148-49, 125 S.Ct. 588, 160 L.Ed.2d 537 (2004); for driving with a suspended license, Moore, 553 U.S. at 166, 128 S.Ct. 1598; and for speeding, Arkansas v. Sullivan, 532 U.S. 769, 769, 121 S.Ct. 1876, 149 L.Ed.2d 994 (2001) (per curiam).

While violating a curfew imposed as a condition of parole is not the gravest of offenses, it is no less reasonable a ground for detention. Indeed, although an offense need not lawfully result in a custodial sentence for it to serve as a basis for a constitutional arrest, Sullivan, 532 U.S. at 771, 121 S.Ct. 1876; Atwater, 532 U.S. at 348-50, 121 S.Ct. 1536, under New York law, a parole violation is a lawful ground for a parolee's arrest and incarceration, reflecting the gravity that the State accords the offense. See N.Y. Exec. L. § 259-i(3). Without defining the limits of Moore, we conclude that probable cause regarding a violation that, if proven, could result in the loss of liberty provides sufficient grounds for a constitutional warrantless arrest.

Bernacet's arrest was constitutionally permissible; the fruits of the search incident to his arrest were therefore properly admitted. Sullivan, 532 U.S. at 771, 121 S.Ct. 1876.10

Conclusion

Bernacet's checkpoint stop was legal and the NYPD had probable cause to believe that he was violating his parole. His arrest by the police staffing the checkpoint, while contrary to New York law, was constitutionally reasonable. The search incident to his arrest uncovered a handgun; because the arrest was constitutionally proper, this weapon was properly admitted at Bernacet's trial.

For the foregoing reasons, the opinion and order of the district court is AFFIRMED.