49 CFR §673.13

1. (a)Each direct recipient, or State as authorized in § 673.11(d), must certify that it has established a Public Transportation Agency Safety Plan meeting the requirements of this part by the start of operations. A direct recipient must certify that it and all applicable subrecipients are in compliance with the requirements of this part. A State Safety Oversight Agency must review and approve a Public Transportation Agency Safety Plan developed by a rail fixed guideway public transportation system, as authorized in 49 U.S.C. 5329(e) and its implementing regulations at 49 CFR part 674.
2. (b)On an annual basis, a direct recipient or State must certify its compliance with this part. A direct recipient must certify that it and all applicable subrecipients are in compliance with the requirements of this part.