23 CFR § 1200.12
Due date for submission
May 21, 2020
(a) Except as specified under §1200.61(a), a State shall submit its Highway Safety Plan electronically to the NHTSA regional office no later than July 1 preceding the fiscal year to which the Highway Safety Plan applies.
(b) Failure to meet this deadline may result in delayed approval and funding of a State's Section 402 grant or disqualification from receiving Section 405 grants.