The following excerpt is from U.S. v. Kennedy, 573 F.2d 657 (9th Cir. 1978):
In Lowe v. United States, 407 F.2d 1391, 1394 (9th Cir. 1969), we suggested guidelines for the permissible scope of inquiries in routine traffic stops: officers are entitled to require a driver to identify himself, provide proof of vehicle ownership and, if not satisfied with his responses, ask his destination and business.
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