Also known as: reasonable officers on the scene · reasonable officer perspective · objective reasonableness
Written by attorneys · grounded in primary & secondary sources — see below
The viewpoint from which courts measure the reasonableness of an officer's conduct under the Fourth Amendment. Courts evaluate the totality of the circumstances as they appeared to a reasonable officer at the moment the officer acted, without the benefit of hindsight.
Officer Rivera stops Renata Russo for a traffic violation and asks for consent to search the car for drugs. Russo agrees without any stated limits. Rivera opens a closed backpack on the back seat and finds contraband. The court applies the reasonable-officer perspective and concludes that the consent extended to the backpack because a reasonable officer on the scene would understand the broad consent to cover containers that could hold drugs.
Regina Robinson leads officers on a dangerous chase through city streets. When cornered, she drives toward officers. Officers fire multiple shots into the vehicle. In the ensuing civil suit, the court measures the officers' actions from the perspective of a reasonable officer on the scene facing an immediate threat to bystanders and concludes that the use of deadly force was reasonable.
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Riley Rivera executes a search warrant later found to lack probable cause. The officers relied on the warrant in good faith. The court evaluates their conduct from the perspective of a reasonable officer on the scene who would have believed the warrant was valid and therefore declines to suppress the evidence.
Robert Rivera provides an affidavit with detailed tips about drug activity. Officers obtain and execute a warrant. The court assesses whether a reasonable officer on the scene would have found the affidavit sufficient to establish probable cause under the totality of the circumstances.
Rowan Russell is detained as a material witness based on an affidavit. He later challenges the detention. The court measures the officers' actions from the perspective of a reasonable officer on the scene who would have believed the affidavit supported the detention order.
Rebecca Ross resists arrest after a traffic stop. Officers use force to subdue her. The court evaluates the officers' conduct from the perspective of a reasonable officer on the scene who must make split-second decisions without the benefit of hindsight.
Courts assess the totality of circumstances from the viewpoint of a reasonable officer on the scene rather than with the benefit of hindsight. This standard recognizes that officers often must make split-second judgments in tense situations. The perspective prevents second-guessing based on later-acquired information.
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The standard is objective. It asks what a reasonable officer on the scene would have done given the facts known at the time. An officer's subjective good faith is not enough if the conduct would appear unreasonable to an objective observer.
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The court asks whether a reasonable officer on the scene would have believed the warrant was valid. If the affidavit was not so lacking in indicia of probable cause that reliance was entirely unreasonable, the evidence is not suppressed.
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…we do not believe that it will have this effect. As we have already suggested, the good-faith exception, turning as it does on objective reasonableness, should not be difficult to apply in practice. When officers have acted pursuant to a warrant, the prosecution should ordinarily be able to establish objective good faith without a…