[Code of Federal Regulations] [Title 23, Volume 1] [Revised as of April 1, 2004] From the U.S. Government Printing Office via GPO Access [CITE: 23CFR669.1] [Page 335] TITLE 23--HIGHWAYS CHAPTER I--FEDERAL HIGHWAY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION PART 669_ENFORCEMENT OF HEAVY VEHICLE USE TAX--Table of Contents Sec. 669.1 Scope and purpose. Sec. 669.1 Scope and purpose. 669.3 Policy. 669.5 Objective. 669.7 Certification requirement. 669.9 Certification content. 669.11 Certification submittal. 669.13 Effect of failure to certify or to adequately obtain proof of payment. 669.15 Procedure for the reduction of funds. 669.17 Compliance finding. 669.19 Reservation and reapportionment of funds. 669.21 Procedure for evaluating state compliance. Authority: 23 U.S.C. 141(d) and 315; 49 CFR 1.48(b). Source: 51 FR 25364, July 14, 1986, unless otherwise noted. To prescribe requirements for certification by the states that evidence of proof of payment is obtained either before vehicles subject to the Federal heavy vehicle use tax are lawfully registered or within 4 months after being lawfully registered if a suspension registration system is implemented.