(a) General. Upon receipt and initial review of the Highway Safety Plan, NHTSA may request additional information from a State to ensure compliance with the requirements of this part. Failure to respond promptly to a request for additional information concerning the Section 402 grant application may result in delayed approval and funding of a State's Section 402 grant. Failure to respond promptly to a request for additional information concerning a Section 405 or Section 1906 grant application may result in a State's disqualification from consideration for a Section 405 or Section 1906 grant.

(b) Approval or disapproval of Highway Safety Plan. Within 45 days after receipt of the HSP under this subpart—

(1) For Section 402 grants, the Regional Administrator shall issue—

(i) A letter of approval, with conditions, if any, to the Governor's Representative for Highway Safety; or

(ii) A letter of disapproval to the Governor's Representative for Highway Safety informing the State of the reasons for disapproval and requiring resubmission of the HSP with proposed revisions necessary for approval.

(2) For Section 405 and Section 1906 grants, the NHTSA Administrator shall notify States in writing of grant awards and specify any conditions or limitations imposed by law on the use of funds.

(c) Resubmission of disapproved Highway Safety Plan. The Regional Administrator shall issue a letter of approval or disapproval within 30 days after receipt of a revised HSP resubmitted as provided in paragraph (b)(1)(ii) of this section.