47 CFR §400.9

1. (a)General. The requirements of 2 CFR part 200, the Uniform Administrative Requirements, Cost Principles, and Audit Requirements for Federal Awards, including applicable cost principles referenced at subpart E, govern the implementation and management of grants awarded under this part.
2. (b)Reporting requirements—(1) Performance reports. Each grant recipient shall submit an annual performance report to NHTSA, following the procedures of 2 CFR 200.328, within 90 days after each fiscal year that grant funds are available, except when a final report is required under § 400.10(b)(2).
   1. (2)Financial reports. Each recipient shall submit quarterly financial reports to NHTSA, following the procedures of 2 CFR 200.327, within 30 days after each fiscal quarter that grant funds are available, except when a final voucher is required under § 400.10(b)(1).