Under Arizona v. Johnson, a police officer conducting a lawful traffic stop may frisk a passenger for weapons when the officer has reasonable suspicion that the passenger is armed and dangerous, even if nothing suggests the passenger was involved in a crime.1LII / Legal Information Institute. Arizona v. Johnson The decision settled a question that the driver-focused traffic-stop cases had left open: a passenger’s protection from a patdown does not turn on whether the officer suspects the passenger of the offense that caused the stop.
The Tucson Stop That Produced the Rule
In April 2002, a gang task force in Tucson stopped a car for a suspended registration, a civil traffic violation. Lemon Johnson was riding in the back seat. Officer Maria Trevizo noticed he was wearing clothing she associated with the Crips and that he had a police scanner in his pocket. She asked him to step out of the car to talk away from the other occupants. As he got out, she saw a bulge that looked like a weapon, patted him down, and found a handgun. Johnson was charged with possession of a weapon by a prohibited possessor.1LII / Legal Information Institute. Arizona v. Johnson
Passengers Are Seized for the Whole Stop
The Supreme Court held that when police pull a car over, everyone in it is seized, not just the driver. The seizure begins when the car stops and lasts until the officer signals the encounter is over.2LII / Legal Information Institute. Arizona v. Johnson – Syllabus A reasonable passenger would not feel free to leave, so the constitutional protections and the officer’s authority both attach from the start.
That authority includes ordering a passenger out of the car and keeping them at the scene while the traffic investigation continues. The officer does not need any independent evidence that the passenger did anything wrong to detain them for the duration of the stop.2LII / Legal Information Institute. Arizona v. Johnson – Syllabus
What Justifies Frisking a Passenger
The frisk itself requires something more: reasonable suspicion that the specific passenger is armed and dangerous. The officer does not have to be certain there is a weapon, but must be able to point to concrete facts supporting the concern.1LII / Legal Information Institute. Arizona v. Johnson In Johnson’s case, the combination of gang-associated clothing, the police scanner, and the visible bulge as he stepped out of the car supplied that basis.
The Court was explicit that the passenger need not be suspected of any crime for the frisk to be lawful. The search is protective, aimed at letting the officer complete the stop without being shot or stabbed, and that safety interest exists whether or not the person being frisked is a suspect.1LII / Legal Information Institute. Arizona v. Johnson
What the Frisk Cannot Become
A lawful frisk is a pat of the outer clothing to feel for weapons. It is not a search of pockets or bags for drugs or other contraband. If the officer feels something immediately recognizable as a weapon, they may remove it.3Justia Law. Terry v. Ohio A search that goes further than a weapons pat can lead to suppression of whatever it turns up.4LII / Legal Information Institute. Minnesota v. Dickerson – Syllabus
How Long the Officer Can Keep You There
Officers can ask passengers questions unrelated to the traffic violation, including about criminal history or travel plans, so long as those questions do not measurably extend the stop.2LII / Legal Information Institute. Arizona v. Johnson – Syllabus Conversation while the officer runs a license check or writes a citation falls within the stop’s normal course.
The stop cannot be prolonged beyond what the traffic mission requires. Once the officer has finished the tasks tied to the violation, the authority to hold the occupants ends unless a new basis for suspicion has developed or the passenger agrees to keep talking voluntarily.5LII / Legal Information Institute. Rodriguez v. United States – Section: Syllabus A brief protective frisk fits within the mission of the stop; a drawn-out detention aimed at fishing for other offenses does not.