rodriguez argued january decided april officer struble officer stopped petitioner rodriguez driving highway shoulder violation nebraska law struble attended everything relating stop including inter alia checking driver licenses rodriguez passenger issuing warning traffic offense asked rodriguez permission walk dog around vehicle rodriguez refused struble detained second officer arrived struble retrieved dog alerted presence drugs vehicle ensuing search revealed methamphetamine seven eight minutes elapsed time struble issued written warning dog alerted rodriguez indicted federal drug charges moved suppress evidence seized vehicle ground among others struble prolonged traffic stop without reasonable suspicion order conduct dog sniff magistrate judge recommended denial motion found reasonable suspicion supporting detention struble issued written warning eighth circuit precedent however concluded prolonging stop seven eight minutes dog sniff de minimis intrusion rodriguez fourth amendment rights reason permissible district denied motion suppress rodriguez entered conditional guilty plea sentenced five years prison eighth circuit affirmed noting seven eight minute delay acceptable de minimis intrusion rodriguez personal liberty declined reach question whether struble reasonable suspicion continue rodriguez detention issuing written warning held absent reasonable suspicion police extension traffic stop order conduct dog sniff violates constitution shield unreasonable seizures routine traffic stop like brief stop terry ohio arrest see arizona johnson tolerable duration determined seizure mission address traffic violation warranted stop illinois caballes attend related safety concerns authority seizure ends tasks tied traffic infraction reasonably completed fourth amendment may tolerate certain unrelated investigations lengthen roadside detention johnson questioning caballes dog sniff traffic stop become unlawful prolonged beyond time reasonably required complete th mission issuing warning ticket beyond determining whether issue traffic ticket officer mission traffic stop typically includes checking driver license determining whether outstanding warrants driver inspecting automobile registration proof insurance checks serve objective enforcement traffic code ensuring vehicles road operated safely responsibly see delaware prouse lacking close connection roadway safety ordinary inquiries dog sniff fairly characterized part officer traffic mission concluding de minimis intrusion offset government interest stopping flow illegal drugs eighth circuit relied pennsylvania mimms reasoned mimms government legitimate weighty interest officer safety outweighed de minimis additional intrusion requiring driver lawfully stopped exit vehicle interest recognized mimms however stemmed danger officer associated traffic stop investigation crimes contrast detours officer mission therefore gains support mimms government argument officer completes tasks expeditiously earn extra time pursue unrelated criminal investigation unpersuasive traffic stop prolonged beyond time fact needed officer complete inquiries unlawful caballes critical question whether dog sniff occurs officer issues ticket whether conducting sniff adds time stop pp determination adopted district detention dog sniff independently supported individualized suspicion reviewed eighth circuit question therefore remains open consideration remand vacated remanded ginsburg delivered opinion roberts scalia breyer sotomayor kagan joined kennedy filed dissenting opinion thomas filed dissenting opinion alito joined kennedy joined part iii alito filed dissenting opinion opinion notice opinion subject formal revision publication preliminary print reports readers requested notify reporter decisions washington typographical formal errors order corrections may made preliminary print goes press dennys rodriguez petitioner writ certiorari appeals eighth circuit april justice ginsburg delivered opinion illinois caballes held dog sniff conducted lawful traffic stop violate fourth amendment proscription unreasonable seizures case presents question whether fourth amendment tolerates dog sniff conducted completion traffic stop hold police stop exceeding time needed handle matter stop made violates constitution shield unreasonable seizures seizure justified traffic violation therefore become unlawful prolonged beyond time reasonably required complete th mission issuing ticket violation recognized caballes adhere line drawn decision midnight march police officer morgan struble observed mercury mountaineer veer slowly onto shoulder nebraska state highway one two seconds jerk back onto road nebraska law prohibits driving highway shoulders see neb rev stat basis struble pulled mountaineer struble officer valley police department dog floyd patrol car night two men mountaineer driver dennys rodriguez passenger scott pollman struble approached mountaineer passenger side rodriguez identified struble asked driven onto shoulder rodriguez replied swerved avoid pothole struble gathered rodriguez license registration proof insurance asked rodriguez accompany patrol car rodriguez asked required struble answered rodriguez decided wait vehicle running records check rodriguez struble returned mountaineer struble asked passenger pollman driver license began question two men coming going pollman replied traveled omaha nebraska look ford mustang sale returning norfolk struble returned patrol car completed records check pollman called second officer struble began writing warning ticket rodriguez driving shoulder road struble returned rodriguez vehicle third time issue written warning struble finished explaining warning rodriguez given back rodriguez pollman documents obtained struble later testified point rodriguez pollman documents back copy written warning got reason stop way took care business app nevertheless struble consider rodriguez free leave although justification traffic stop way struble asked permission walk dog around rodriguez vehicle rodriguez said struble instructed rodriguez turn ignition exit vehicle stand front patrol car wait second officer rodriguez complied deputy sheriff arrived struble retrieved dog led twice around mountaineer dog alerted presence drugs halfway struble second pass told seven eight minutes elapsed time struble issued written warning dog indicated presence drugs search vehicle revealed large bag methamphetamine rodriguez indicted district district nebraska one count possession intent distribute grams methamphetamine violation moved suppress evidence seized car ground among others struble prolonged traffic stop without reasonable suspicion order conduct dog sniff receiving evidence magistrate judge recommended motion denied magistrate judge found probable cause search vehicle independent dog alert app apart information given dog officer struble thing rather large hunch found reasonable suspicion supported detention struble issued written warning concluded however eighth circuit precedent extension stop seven eight minutes dog sniff de minimis intrusion rodriguez fourth amendment rights therefore permissible district adopted magistrate judge factual findings legal conclusions denied rodriguez motion suppress noted eighth circuit dog sniffs occur within short time following completion traffic stop constitutionally prohibited constitute de minimis intrusions app quoting alexander thus agreed magistrate judge minutes added stop dog sniff significance app impelled decision rodriguez entered conditional guilty plea sentenced five years prison eighth circuit affirmed delay case opinion noted resembled delays previously ranked permissible appeals thus ruled delay constituted acceptable de minimis intrusion rodriguez personal liberty given ruling declined reach question whether struble reasonable suspicion continue rodriguez detention issuing written warning granted certiorari resolve division among lower courts question whether police routinely may extend traffic stop absent suspicion order conduct dog sniff compare morgan postcompletion delay well ten minutes permissible state baker ut ithout additional reasonable suspicion officer must allow seized person depart purpose stop ii seizure traffic violation justifies police investigation violation relatively brief encounter routine traffic stop analogous stop formal arrest knowles iowa quoting berkemer mccarty turn citing terry ohio see also arizona johnson like terry stop tolerable duration police inquiries context determined seizure mission address traffic violation warranted stop caballes attend related safety concerns infra see also sharpe florida royer plurality opinion scope detention must carefully tailored underlying addressing infraction purpose stop may last longer necessary effectuate th purpose ibid see also caballes authority seizure thus ends tasks tied traffic infraction reasonably completed see sharpe determining reasonable duration stop appropriate examine whether police diligently pursued investigation decisions caballes johnson heed constraints cases concluded fourth amendment tolerated certain unrelated investigations lengthen roadside detention johnson questioning caballes dog sniff caballes however cautioned traffic stop become unlawful prolonged beyond time reasonably required complete th mission issuing warning ticket repeated admonition johnson seizure remains lawful long unrelated inquiries measurably extend duration stop see also muehler mena unrelated inquiries exten time petitioner detained additional fourth amendment justification required officer words may conduct certain unrelated checks otherwise lawful traffic stop contrary justice alito suggestion post may way prolongs stop absent reasonable suspicion ordinarily demanded justify detaining see post alito dissenting premising opinion dissent finding reasonable suspicion although district reached opposite conclusion appeals declined consider issue beyond determining whether issue traffic ticket officer mission includes ordinary inquiries incident traffic stop caballes typically inquiries involve checking driver license determining whether outstanding warrants driver inspecting automobile registration proof insurance see delaware prouse see also lafave search seizure pp ed checks serve objective enforcement traffic code ensuring vehicles road operated safely responsibly see prouse lafave search seizure warrant check makes possible determine whether apparent traffic violator wanted one previous traffic dog sniff contrast measure aimed detect ing evidence ordinary criminal wrongdoing indianapolis edmond see also florida jardines slip candidly government acknowledged oral argument dog sniff unlike routine measures mentioned ordinary incident traffic stop see tr oral arg lacking close connection roadway safety ordinary inquiries dog sniff fairly characterized part officer traffic mission advancing de minimis rule eighth circuit relied heavily decision pennsylvania mimms per curiam see currency mimms reasoned government legitimate weighty interest officer safety outweighs de minimis additional intrusion requiring driver already lawfully stopped exit vehicle see also maryland wilson passengers may required exit vehicle stopped traffic violation eighth circuit echoed justice thomas dissent believed imposition similarly offset government strong interest interdicting flow illegal drugs along nation highways currency see post unlike general interest criminal enforcement however government officer safety interest stems mission stop traffic stops especially fraught danger police officers johnson internal quotation marks omitted officer may need take certain negligibly burdensome precautions order complete mission safely cf holt en banc recognizing officer safety justification criminal record outstanding warrant checks abrogated grounds recognized stewart investigation crimes however detours mission see supra safety precautions taken order facilitate detours cf post alito dissenting thus even assuming imposition intrusive exit order mimms dog sniff justified basis highway officer safety interests different kind government endeavor detect crime general drug trafficking particular government argues officer may incremental ly prolong stop conduct dog sniff long officer reasonably diligent pursuing purpose stop overall duration stop remains reasonable relation duration traffic stops involving similar circumstances brief government argument effect completing tasks expeditiously officer earn bonus time pursue unrelated criminal investigation see also post thomas dissenting embracing government argument reasonableness seizure however depends police fact see knowles regard government acknowledges officer always reasonably diligent tr oral arg diligence gauged noting officer actually officer complete inquiries expeditiously amount time reasonably required complete stop mission caballes said caballes reiterate today traffic stop prolonged beyond point unlawful ibid critical question whether dog sniff occurs officer issues ticket justice alito supposes post whether conducting sniff prolongs adds time stop supra iii magistrate judge found detention dog sniff case independently supported individualized suspicion see app district adopted magistrate judge findings see appeals however review determination see post thomas dissenting resolving issue nevermind appeals left unaddressed post alito dissenting upbraiding addressing sole issue decided appeals characterizing answer unnecessary instead decided issue appeals decide question whether reasonable suspicion criminal activity justified detaining rodriguez beyond completion traffic infraction investigation therefore remains open eighth circuit consideration remand reasons stated judgment appeals eighth circuit vacated case remanded proceedings consistent opinion ordered kennedy dissenting dennys rodriguez petitioner writ certiorari appeals eighth circuit april justice kennedy dissenting join justice thomas dissenting opinion extend part iii although issue discussed part argued appeals addressed aspect case detail view better course allow first instance thomas dissenting dennys rodriguez petitioner writ certiorari appeals eighth circuit april justice thomas justice alito joins justice kennedy joins part iii dissenting ten years ago explained conducting dog sniff change character traffic stop lawful inception otherwise executed reasonable manner illinois caballes question whether officer executed stop reasonable manner waited conduct dog sniff given driver written warning backup unit arrived bringing overall duration stop minutes stop reasonably executed fourth amendment violation occurred holding contrary reconciled decision caballes number common police practices also unnecessary officer possessed reasonable suspicion continue hold driver conduct dog sniff respectfully dissent fourth amendment protects right people secure persons houses papers effects unreasonable searches seizures amdt text indicates repeatedly confirmed ultimate touchstone fourth amendment brigham city stuart defined reasonableness objective terms examining totality circumstances ohio robinette considering traditional protections unreasonable searches seizures afforded common law time framing atwater lago vista internal quotation marks omitted traditional protections provided definitive answer precedents analyzed search seizure light traditional standards reasonableness assessing one hand degree intrudes upon individual privacy degree needed promotion legitimate governmental interests virginia moore internal quotation marks omitted although traffic stop constitutes within meaning fourth amendment seizure constitutionally reasonable police probable cause believe traffic violation occurred whren seizure lawful inception violate fourth amendment manner execution unreasonably infringes interests protected constitution caballes supra rodriguez dispute officer struble probable cause stop question whether stop otherwise executed reasonable manner see brief appellant easily conclude approximately minutes passed time officer struble stopped rodriguez dog alerted presence drugs amount time hardly ordinary traffic stop single officer vehicle containing multiple occupants even dog sniff involved see ellis minutes barragan approximately minutes time officer struble conducted ordinary activities traffic stop approached vehicle questioned rodriguez observed violation asked pollman travel plans ran serial warrant checks rodriguez pollman issued written warning rodriguez decided conduct dog sniff took precaution calling backup concern safety see see also pennsylvania mimms per curiam officer safety legitimate weighty concern relevant reasonableness caballes makes clear fact officer struble waited gave rodriguez warning conduct dog sniff alter analysis use dog generally implicate legitimate privacy interests conducting dog sniff change character traffic stop lawful inception otherwise executed reasonable manner stop lawful inception otherwise executed reasonable manner ibid caballes conducting dog sniff change character traffic stop thus fourth amendment violation occurred ii rather adhere reasonableness requirement repeatedly characterized touchstone fourth amendment brigham city supra majority constructed test inconsistent precedents majority rule requires traffic stop en tasks tied traffic infraction reasonably completed ante officer complete inquiries expeditiously amount time reasonably required complete stop mission may hold individual longer ante internal quotation marks alterations omitted majority rule thus imposes ratchet constitutional protection linked characteristics individual officer conducting stop driver stopped particularly efficient officer entitled released traffic stop shorter period time driver stopped less efficient officer similarly driver stopped officer access technology shorten records check entitled released stop shorter period time individual stopped officer without access technology accept search seizure protections fourth amendment variable made turn upon trivialities whren citations omitted repeatedly explained reasonableness inquiry must hinge characteristics individual officer conducting seizure held example officer state mind invalidate action taken long circumstances viewed objectively justify action internal quotation marks omitted spurned theories make fourth amendment change local law enforcement practices moore supra rejected rule require offense establishing probable cause closely related offense identified arresting officer rule make constitutionality arrest vary place place time time depending whether arresting officer reason detention whether correctly identifies general class offense probable cause exists devenpeck alford internal quotation marks citation omitted devenpeck unanimous explained arrest made knowledgeable veteran officer valid whereas arrest made rookie precisely circumstances see reason ascribe fourth amendment arbitrarily variable protection ibid majority logic produce similarly arbitrary results reasoning traffic stop made rookie executed reasonable manner whereas traffic stop made knowledgeable veteran officer precisely circumstances might fact knowledge experience made capable completing stop faster long rejected interpretations fourth amendment produce haphazard results see reason depart consistent practice today enough majority also limits duration stop time takes officer complete narrow category inquiries ante according majority inquiries include serve objective enforcement traffic code ensuring vehicles road operated safely responsibly ante inquiries directed detecting evidence ordinary criminal wrongdoing inquiries thus count toward overall duration stop ibid internal quotation marks alteration omitted combination definition inquiries majority durational limit produces result demonstrably odds decision caballes caballes expressly anticipated traffic stop reasonably prolonged officers engage dog sniff explained fourth amendment violation occurred caballes duration stop entirely justified traffic offense ordinary inquiries incident stop suggested different result might attend case involving dog sniff occurred unreasonably prolonged traffic stop emphasis added dividing line whether overall duration stop exceeded time reasonably required complete th mission majority suggests whether duration stop fact exceeded time necessary complete inquiries ante majority approach draws artificial line dog sniffs common police practices lower courts routinely confirmed warrant checks constitutionally permissible part traffic stop see simmons mendez shabazz majority confirms finds fault measures ante yet reasoning suggests opposite warrant checks look like directed detecting evidence ordinary criminal wrongdoing ensuring vehicles road operated safely responsibly ante internal quotation marks alteration omitted perhaps one argue existence outstanding warrant might make driver less likely operate vehicle safely responsibly road said driver possession contraband driver confronted police either case might try flee become violent toward officer majority analysis dog sniff directed uncovering problem treated inquiry warrant checks arguably fare better majority suggests warrant check ordinary inquiry incident traffic stop used determine whether apparent traffic violator wanted one previous traffic offenses ante quoting lafave search seizure ed treatise majority relies notes checks manifest ation drugs motivation often underlying routine traffic stops thus much like dog sniff case investigative questioning rests basis dog sniff asking questions essential part police investigations hiibel sixth judicial dist humboldt lower courts routinely upheld questioning routine traffic stops see rivera childs majority reasoning appears allow officers engage questioning aimed detecting evidence ordinary criminal wrongdoing ante hard see inquiries fall within seizure address ing traffic violation warranted stop attend ing related safety concerns ibid reasoning appears come principle dogs different fundamental level majority inquiry elides distinction traffic stops based probable cause based reasonable suspicion probable cause traditional justification seizure person whren emphasis deleted see also dunaway new york created exception rule terry ohio permitting police officers suspect criminal activity make limited intrusions individual personal security based less probable cause michigan summers reasonable suspicion justification seizures prado navarette california slip traffic stops initiated based probable cause reasonable suspicion although commented routine traffic stop analogous stop formal arrest rejected notion traffic stop supported probable cause may exceed bounds set fourth amendment scope terry stop berkemer mccarty citation omitted although traffic stops must executed reasonably precedents make clear traffic stops justified reasonable suspicion subject additional limitations justified probable cause traffic stop based reasonable suspicion like terry stops must justified inception reasonably related scope circumstances justified interference first place hiibel internal quotation marks omitted also continue excessive period time resemble traditional arrest citation omitted contrast stop based probable cause affords officer considerably leeway seizures officer may engage warrantless arrest driver atwater warrantless search incident arrest driver riley california slip warrantless search incident arrest vehicle reasonable believe evidence relevant crime arrest might found arizona gant majority casually tosses distinction aside asserts traffic stop case undisputedly initiated basis probable cause last longer fact necessary effectuate mission stop ante assumes mission stop merely write traffic ticket rather consider making custodial arrest ante support durational requirement relies primarily cases involving terry stops see ante citing arizona johnson analyzing stop frisk passenger vehicle temporarily seized traffic violation sharpe analyzing seizure individuals based suspicion marijuana trafficking florida royer plurality opinion analyzing seizure man walking airport suspicion narcotics activity case involving traffic stop based probable cause majority cites rule caballes decision provides support today restructuring fourth amendment jurisprudence caballes made clear context traffic stop supported probable cause dog sniff change character traffic stop lawful inception otherwise executed reasonable manner sure dissent caballes appl ied terry test determine whether canine sniff impermissibly expanded scope initially valid seizure caballes ginsburg dissenting even conceded caballes majority implicitly rejected application terry traffic stop converted calling dog drug search strictly limiting tasks define durational scope traffic stop majority accomplishes today caballes dissent strictly limiting scope officer activities traffic stop justified probable cause renders difference probable cause reasonable suspicion virtually meaningless context shift supported neither fourth amendment precedents interpreting results constitutional framework lacks predictability officer struble arrested handcuffed taken rodriguez police station traffic violation complied fourth amendment see atwater supra made rodriguez wait seven eight extra minutes dog arrived evidently committed constitutional violation view fourth amendment makes little sense iii today revision fourth amendment jurisprudence also entirely unnecessary rodriguez suffered fourth amendment violation entirely independent reason officer struble reasonable suspicion continue hold investigative purposes precedents make clear fourth amendment permits officer conduct investigative traffic stop officer particularized objective basis suspecting particular person stopped criminal activity prado navarette slip internal quotation marks omitted reasonable suspicion determined looking whole picture taking account factual practical considerations everyday life reasonable prudent men legal technicians act ornelas internal quotation marks omitted officer struble testified first became suspicious rodriguez engaged criminal activity number reasons approached vehicle smelled overwhelming odor air freshener coming vehicle experience common attempt conceal odor people want smelled police app also observed upon approaching front window passenger side vehicle rodriguez passenger scott pollman appeared nervous pollman pulled hat low puffed nervously cigarette refused make eye contact officer thought nervous typical passenger es anything worry hey commit traffic violation officer struble interactions vehicle occupants increased suspicions asked rodriguez driven onto shoulder rodriguez claimed swerved avoid pothole story squared officer struble observation vehicle slowly driving road jerked back onto officer struble asked pollman coming going pollman told traveling omaha nebraska back norfolk nebraska looking vehicle considering purchasing pollman told officer neither seen pictures vehicle confirmed title trip officer struble explained seemed suspicious drive approximately two hours late night see vehicle sight unseen possibly buy go norfolk omaha look sually people leave omaha go get vehicles way around due higher omaha taxes facts taken together easily meet standard reasonable suspicion ervous evasive behavior pertinent factor determining reasonable suspicion illinois wardlow vehicle occupants engaged conduct officer also recognized heavy use air freshener experience indicated presence contraband vehicle ommonsense judgments inferences human behavior support officer conclusion pollman story trip likely cover story illegal activity taking account relevant facts officer struble possessed reasonable suspicion criminal activity conduct dog sniff rodriguez contends reasonable suspicion exist actions giving rise officer suspicions entirely innocent cases easily dispose argument acts might innocent taken together give rise reasonable suspicion arvizu terry classic example involved two individuals repeatedly walking back forth looking store window conferring one another well third man reasoned series acts perhaps innocent together warranted investigation reiterated analysis number cases see arvizu supra sokolow one different conclude police violate fourth amendment officer struble possessed probable cause stop rodriguez driving shoulder executed subsequent stop reasonable manner decision caballes requires majority holding contrary irreconcilable caballes number routine police practices distorts distinction traffic stops justified probable cause justified reasonable suspicion abandons reasonableness touchstone fourth amendment respectfully dissent alito dissenting dennys rodriguez petitioner writ certiorari appeals eighth circuit april justice alito dissenting impractical arbitrary decision addresses purely hypothetical question whether traffic stop case unreasonable police officer prior leading dog around exterior petitioner car already reasonable suspicion car contained drugs fact however police officer reasonable suspicion result officer justified detaining occupants short period time seven eight minutes issue relevant facts dispute officer struble made stop witness suppression hearing testimony happened challenged defense counsel argued facts recounted officer struble insufficient establish reasonable suspicion defense counsel dispute facts attack officer credibility similarly magistrate judge conducted hearing question officer credibility justice thomas opinion shows facts recounted officer struble easily meet standard reasonable suspicion ante dissenting opinion see also carpenter finding reasonable suspicion dog sniff based implausible travel plans nervous conduct ludwig finding reasonable suspicion dog sniff among things officer smelled strong masking odors defendant account travel suspect defendant exceptionally nervous throughout encounter reach decide question really presented facts case answer question arbitrary refuses address real fourth amendment question whether stop unreasonably prolonged instead latches onto fact officer struble delivered warning prior dog sniff proclaims authority detain based traffic stop ends citation warning handed driver thus holds fourth amendment violated length stop simply sequence officer struble chose perform tasks holding arbitrary perverse since officer struble chose sequence purpose protecting safety possibly safety others see app without prolonging stop officer struble conducted dog sniff one tasks regards properly part traffic stop still progress sequence entailed unnecessary risk approximately collecting pollman driver license officer struble two things called information needed records check pollman step recognizes properly part traffic stop requested another officer report scene officer struble decided perform dog sniff want without another officer present occupants vehicle know vehicle contains large amount illegal drugs see dog alerted presence drugs almost certainly realize police proceed search vehicle discover drugs make arrests thus reasonable officer believe alert increase risk occupants vehicle attempt flee perhaps even attack officer see dawdy recounting scuffle officer defendant drugs discovered case officer struble concerned outnumbered scene therefore called backup waited arrival another officer conducting sniff result sniff completed seven eight minutes delivered warning officer struble proceeded dog sniff waiting results records check pollman arrival second officer dog present officer struble car chosen riskier sequence events dog sniff completed point time according analysis authority detain traffic stop ended thus action lawful officer made unreasonable decision risk life became unlawful officer made reasonable decision wait minutes backup officer struble error apparently following prudent procedures motivated legitimate safety concerns holding therefore makes practical sense nothing fourth amendment speaks reasonableness compels arbitrary line rule adopts little good going unlikely appreciable effect length future traffic stops officers learn prescribed sequence events even fathom reason requirement love proverbial fly wall police instructors teach rule officers make traffic stops reasons set justice thomas opinion respectfully dissent footnotes see brief opposition important note decision affect procedures routinely carried traffic stops including checking driver license determining whether outstanding warrants driver inspecting automobile registration proof insurance ante reaffirms police may conduct certain unrelated checks otherwise lawful traffic stop ibid thus remains true police may ask questions aimed uncovering criminal conduct may order occupants car valid stop see arizona johnson maryland wilson pennsylvania mimms per curiam