Collins v. Virginia
The Court ruled that police cannot use the Fourth Amendment's automobile exception, which normally lets officers search cars without a warrant, to justify walking onto the private, enclosed part of someone's driveway to search a vehicle parked there.
Because that area counted as part of the home's protected surroundings (its curtilage), the officer needed a warrant before entering it, even though he only needed probable cause to search the motorcycle itself once lawfully there.
“The reason is that the scope of the automobile exception extends no further than the automobile itself.”
Explaining why the automobile exception could not justify entering the home's curtilage.
How it got here: A Virginia trial court denied suppression and convicted Collins; the Virginia Court of Appeals and Virginia Supreme Court both affirmed, and Collins asked the U.S. Supreme Court to review.
The Case in Depth
What happened
Police suspected Ryan Collins possessed a stolen motorcycle after two officers separately failed to catch a speeding orange-and-black motorcycle. An officer found photos on Collins' Facebook showing the motorcycle at his girlfriend's house, drove there, saw a covered motorcycle in the driveway matching the photos, and without a warrant walked up the driveway, removed the tarp, and ran the plate and VIN, confirming the bike was stolen.
The question before the Court
Can police, without a warrant, walk onto a home's driveway to lift a tarp off a motorcycle just because cars usually don't need warrants to be searched?
The Court's answer
No — the Court ruled that the automobile exception, which lets police search a car without a warrant if they have probable cause, does not let officers physically enter a home's curtilage (the private area immediately around a house) to reach that car. The enclosed top part of the driveway here counted as curtilage, just like a porch or side yard, so it received the same warrant protection as the home itself.
The automobile exception's justifications — a car's mobility and heavy regulation — apply only to the vehicle, not to the surrounding property, so they can't be stretched to authorize entering someone's yard or driveway. The officer needed either a warrant or another recognized exception, like an emergency, before stepping onto the curtilage to lift the tarp.
Curious how the Court got there? See the step-by-step legal reasoning →
Why it matters
Homeowners and renters retain warrant protection for vehicles parked in driveways, carports, or other areas close to the house, even though police generally don't need a warrant to search a car on a public street. Police departments must now assess whether a vehicle sits within a home's protected curtilage before entering to search it without a warrant.
What changes now
The Virginia Supreme Court's judgment is reversed, and the case returns to the Virginia courts. On remand, the state may still argue that the officer's warrantless entry onto the driveway was justified under a different Fourth Amendment exception, such as exigent circumstances, a question the Supreme Court left open.
What this does not decide
The Court did not decide whether the search was reasonable on some other basis, such as exigent circumstances, leaving that question open for the Virginia courts on remand. It also did not disturb the officer's ability to search vehicles without a warrant when they are not within a home's curtilage.
Concurrences and dissents
Concurrence — Justice Thomas
Justice Thomas agreed the Fourth Amendment was violated but wrote separately to question whether the Court has authority to force state courts to apply the federal exclusionary rule, which suppresses illegally obtained evidence. He argued the exclusionary rule is not grounded in the Constitution or a federal statute, so it cannot bind states as federal common law, and urged the Court to revisit whether states must apply it at all.
Dissent — Justice Alito
Justice Alito argued the search was entirely reasonable because the motorcycle was just as mobile and no more private than if it had been parked at the curb, and the officer's brief walk up the driveway caused no real harm. He would have applied the automobile exception without a separate warrant requirement based on curtilage, since the vehicle's mobility, not the officer's location, should control.
How the Court got there
The legal reasoning, step by step
- The Court explained that the automobile exception lets police search a vehicle without a warrant if they have probable cause, because cars are readily mobile and heavily regulated — reasons that apply only to vehicles, not to homes.
- Separately, the Court's precedents treat curtilage, meaning the area right around a house where home life extends (like a porch or enclosed yard), as part of the home itself for Fourth Amendment purposes, so entering it to gather evidence is presumptively unlawful without a warrant.
- The Court found the enclosed top portion of the driveway, walled on two sides and abutting the house, qualified as curtilage just like a porch or side garden.
- Because the automobile exception's justifications concern only the vehicle and not the surrounding property, the Court held the exception does not extend to give officers a right to physically enter a home's curtilage to reach a vehicle.
- Drawing an analogy to the plain-view doctrine and to arrest law, both of which require a lawful right of physical access before acting, the Court concluded officers similarly need a lawful right of access — meaning a warrant or another exception — before entering curtilage to search a car.
- The Court rejected Virginia's proposed categorical rule allowing warrantless entry into curtilage so long as it wasn't a fixed enclosed structure, reasoning that all curtilage receives equal constitutional protection regardless of a homeowner's ability to afford a garage.
Doctrinal impact
Cases affected by this decision
Distinguishes Scher v. United States (305 U. S. 251)
The Court said this earlier case involved a moving vehicle and admitted contraband, not an unattended vehicle in curtilage.
Distinguishes Pennsylvania v. Labron (518 U. S. 938)
The Court noted that case didn't involve a determination that the driveway searched was curtilage.