“Admittedly, Terry, Dunaway, Royer, and Place, considered together, may in some instances create difficult line-drawing problems in distinguishing an investigative stop from a de facto arrest. Obviously, if an investigative stop continues indefinitely, at some point it can no longer be justified as an investigative stop. But our cases impose no rigid time limitation on Terry stops. While it is clear that ‘the brevity of the invasion of the individual’s Fourth Amendment interests is an important factor in determining whether the seizure is so minimally intrusive as to be justifiable on reasonable suspicion,’ we have emphasized the need to consider the law enforcement purposes to be served by the stop as well as the time reasonably needed to effectuate those purposes. Much as a ‘bright line’ rule would be desirable, in evaluating whether an investigative detention is unreasonable, common sense and ordinary human experience must govern over rigid criteria.”
“The Court of Appeals’ decision would effectively establish a per se rule that a 20-minute detention is too long to be justified under the Terry doctrine. Such a result is clearly and fundamentally at odds with our approach in this area.”
“In assessing whether a detention is too long in duration to be justified as an investigative stop, we consider it appropriate to examine whether the police diligently pursued a means of investigation that was likely to confirm or dispel their suspicions quickly, during which time it was necessary to detain the defendant. A court making this assessment should take care to consider whether the police are acting in a swiftly developing situation, and in such cases the court should not indulge in unrealistic second-guessing.”
“We readily conclude that, given the circumstances facing him, [the DEA agent] pursued his investigation in a diligent and reasonable manner. During most of [the Respondent’s] 20-minute detention, [the DEA agent] was attempting to contact the local police who remained with Sharpe while [the DEA agent] left to pursue Officer Thrasher and the pickup. Once [the DEA agent] reached Officer Thrasher and [the Respondent], he proceeded expeditiously: within the space of a few minutes, he examined [the Respondent’s] driver’s license and the truck’s bill of sale, requested (and was denied) permission to search the truck, stepped on the rear bumper and noted that the truck did not move, confirming his suspicion that it was probably overloaded. He then detected the odor of marihuana.”
“Clearly this case does not involve any delay unnecessary to the legitimate investigation of the law enforcement officers. [N]o evidence [was presented] that the officers were dilatory in their investigation. The delay in this case was attributable almost entirely to the evasive actions of [the Respondent], who sought to elude the police as Sharpe moved his Pontiac to the side of the road. Except for [the Respondent’s] maneuvers, only a short and certainly permissible pre-arrest detention would likely have taken place. The somewhat longer detention was simply the result of a ‘graduate[d] . . . respons[e] to the demands of [the] particular situation[.]’ ”