Section 384.401 - Withholding of funds based on noncompliance(a)Following the first year of noncompliance. An amount up to 4 percent of the Federal-aid highway funds required to be apportioned to any State under 23 U.S.C. 104(b)(1) and (2) shall be withheld from a State on the first day of the fiscal year following such State's first year of noncompliance under this part.(b)Following second and subsequent year(s) of noncompliance. An amount up to 8 percent of the Federal-aid highway funds required to be apportioned to any State under 23 U.S.C. 104(b)(1) and (2) shall be withheld from a State on the first day of the fiscal year following such State's second or subsequent year(s) of noncompliance under this part. 86 FR 35642 , July 7, 2021 81 FR 68347, 10/4/2016; 86 FR 35642, 7/7/2021