Michigan v. Long Cite: 463 U.S 1032 (1983) Vote: 6-3 Opinion: O’Connor Facts: Police officers interrogated David Long after driving his vehicle off the road and plunged into a shallow ditch in Barry County, Michigan. Police officers claimed that Long acted carelessly and seemed to under influence of a drug or something else. The officers conducted a search and found out a hunting knife in Long’s car. The police believed that the car carried dangerous weapons, and they wanted to protect themselves and nearby citizens. They carried out search with the same intention though did not find any weapon, but they identified a bag of marijuana.