The court properly denied defendant's suppression motion. There is no basis for disturbing the court's credibility determinations, which are supported by the record ( see People v. Prochilo, 41 NY2d 759, 761). The hearing evidence established that the police lawfully stopped defendant for violating the Open Container Law (Administrative Code of City of NY § 10-125 [b]), and that when defendant produced inadequate identification, the police lawfully conducted a protective frisk before transporting him to the precinct to determine his identity and check for warrants. The officer's testimony was sufficiently detailed to permit the court to make a finding that the form of identification defendant produced was inadequate.