Cite as: 531 U. S. 32 (2000)
Opinion of the Court
describe them as "being operated by the City of Indianapolis in an effort to interdict unlawful drugs in Indianapolis." App. to Pet. for Cert. 51a-52a. In addition, the first document attached to the parties' stipulation is entitled "DRUG CHECKPOINT CONTACT OFFICER DIRECTIVES BY ORDER OF THE CHIEF OF POLICE." Id., at 53a. These directives instruct officers to "[a]dvise the citizen that they are being stopped briefly at a drug checkpoint." Ibid. The second document attached to the stipulation is entitled "1998 Drug Road Blocks" and contains a statistical breakdown of information relating to the checkpoints conducted. Id., at 55a. Further, according to Sergeant DePew, the checkpoints are identified with lighted signs reading, " 'NARCOTICS CHECKPOINT MILE AHEAD, NARCOTICS K-9 IN USE, BE PREPARED TO STOP.' " Id., at 57a. Finally, both the District Court and the Court of Appeals recognized that the primary purpose of the roadblocks is the interdiction of narcotics. 38 F. Supp. 2d, at 1026 (noting that both parties "stress the primary purpose of the roadblocks as the interdiction of narcotics" and that "[t]he IPD has made it clear that the purpose for its checkpoints is to interdict narcotics traffic"); 183 F. 3d, at 665 (ob-serving that "the City concedes that its proximate goal is to catch drug offenders").
We have never approved a checkpoint program whose primary purpose was to detect evidence of ordinary criminal wrongdoing. Rather, our checkpoint cases have recognized only limited exceptions to the general rule that a seizure must be accompanied by some measure of individualized suspicion. We suggested in Prouse that we would not credit the "general interest in crime control" as justification for a regime of suspicionless stops. 440 U. S., at 659, n. 18. Consistent with this suggestion, each of the checkpoint programs that we have approved was designed primarily to serve purposes closely related to the problems of policing the border or the necessity of ensuring roadway safety. Because the
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