Also known as: objectively reasonable · objective reasonable · objective reasonable standard
Written by attorneys · grounded in primary & secondary sources — see below
A legal standard that measures actions or beliefs by what a reasonable person would have done or understood in the same situation. The inquiry focuses on external facts available to the actor rather than the actor's actual state of mind.
Oskar Ocampo gave officers permission to search his car for drugs without any stated limits. Officers opened a closed duffel bag in the trunk and found narcotics inside. The search remained within the scope of consent because a reasonable officer could interpret the broad permission as extending to containers likely to hold the drugs.
Orlando Okafor learned that his spouse was having an affair and immediately confronted the spouse's partner at a nearby bar. After the partner struck Orlando's sibling during the argument, Orlando retrieved a knife and fatally stabbed the partner before any significant time passed. The factfinder assessed whether an ordinary person would have remained under the influence of sudden passion without cooling off.
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Ophelia O'Brien obtained a search warrant that contained a clerical error in the address caused by the issuing judge. Officers executed the warrant at the correct location and seized evidence. The evidence was admissible because the officers' reliance on the warrant's facial validity was objectively reasonable despite the defect.
Owen Ortega presented an affidavit to a magistrate that lacked sufficient probable cause details. The magistrate issued the warrant anyway. Officers searched the premises and recovered contraband. Suppression was not required because the officers acted in objectively reasonable reliance on the neutral magistrate's determination.
Oriana Oberman, a deputy, pursued a fleeing motorcycle at high speed through residential streets. When the motorcycle crashed, the deputy continued the chase on foot and tackled the driver. The driver's estate claimed a due process violation. The court measured the deputy's conduct against an objective standard of what a reasonable officer would have done under the rapidly evolving circumstances.
Opal Okoro, a government official, authorized a search that later proved unconstitutional. The plaintiff sued for damages. The official was entitled to immunity because a reasonable official in the same position would not have known that the conduct violated clearly established law at the time.
No. The standard evaluates conduct or belief from the perspective of a reasonable person with the same information, regardless of the actor's subjective state of mind. Courts therefore disregard an officer's personal motives or an individual's actual understanding when applying the test.
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A seizure remains valid if the officer's mistaken belief that a traffic violation occurred was objectively reasonable. The Fourth Amendment tolerates such errors provided a reasonable officer could have reached the same conclusion based on the facts and governing law.
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Consent is effective if officers reasonably believe the third party has authority over the premises or effects. The belief must be grounded in objective facts known to the officers at the time, even if the belief later proves incorrect.
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Officers may rely on a warrant later found invalid when their reliance was objectively reasonable. Suppression is barred unless the warrant was facially deficient, the magistrate abandoned neutrality, or the officers misled the issuing judge.
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…the police to conduct an area search of the passenger compartment to uncover weapons, as long as they possess an articulable and objectively reasonable belief that the suspect is potentially dangerous. The Michigan Supreme Court appeared to believe that it was not reasonable for the officers to fear that Long could injure them, because he…