During a traffic stop, a dog sniff is not a seizure if it does not substantially prolong the stop.

During a traffic stop, a dog sniff is not a seizure if it does not substantially prolong the stop.

• A. Always a seizure.
• B. Not a seizure if they do not substantially prolong the stop.
• C. Only if the dog indicates contraband.
• D. Never allowed.

Answer: (B)

The key idea is that a traffic stop is itself a seizure under the Fourth Amendment, and anything that adds time to that stop can amount to a new seizure unless it is limited to the time needed to handle the initial traffic matter. A canine sniff during the stop is permissible only if it does not substantially prolong the stop beyond the time reasonably required to complete the stop’s purpose (like issuing a ticket or addressing the reason for the stop). If the sniff fits within that time frame, it’s not a separate seizure. If the sniff delays beyond what’s reasonably necessary, then the stop is unlawfully extended and would become an actual seizure unless there’s independent reasonable suspicion. The dog’s indication of contraband is not required for the sniff to be constitutional or not; the critical factor is whether the stop is prolonged. Therefore, the statement that a dog sniff is not a seizure if it does not substantially prolong the stop is the correct understanding.

The key idea is that a traffic stop is itself a seizure under the Fourth Amendment, and anything that adds time to that stop can amount to a new seizure unless it is limited to the time needed to handle the initial traffic matter. A canine sniff during the stop is permissible only if it does not substantially prolong the stop beyond the time reasonably required to complete the stop’s purpose (like issuing a ticket or addressing the reason for the stop). If the sniff fits within that time frame, it’s not a separate seizure. If the sniff delays beyond what’s reasonably necessary, then the stop is unlawfully extended and would become an actual seizure unless there’s independent reasonable suspicion. The dog’s indication of contraband is not required for the sniff to be constitutional or not; the critical factor is whether the stop is prolonged. Therefore, the statement that a dog sniff is not a seizure if it does not substantially prolong the stop is the correct understanding.