; (B) determine the most effective countermeasures to implement in those areas, with priority given to countermeasures rated above 3 stars; and (C) report annual data under uniform reporting requirements established by the Secretary, including— (i) traffic citations and arrests; (ii) the increase in traffic safety enforcement activity supported by these funds; and (iii) any other metrics the Secretary determines appropriate to determine the success of the grant. (7) Use of funds (A) In general Grant funds received by a State under this subsection may be used for— (i) implementing countermeasures determined under paragraph (6)