AUTOMOBILE STOPS
Generally, police officers may stop a car if they have at least reasonable
suspicion to believe that a law has been violated.
Traffic Stops and Police Dogs
During routine traffic stops, a dog sniff is not a search, so long
as the police do not extend the stop beyond the time needed to
issue a ticket or conduct normal inquiries.
Police Dogs Outside homes
the police
(without probable cause) cannot use a drug sniffing dog outside of
the home of a suspected drug dealer