[Code of Federal Regulations] [Title 23, Volume 1] [Revised as of April 1, 2003] From the U.S. Government Printing Office via GPO Access [CITE: 23CFR750.155] [Page 376-377] TITLE 23--HIGHWAYS CHAPTER I--FEDERAL HIGHWAY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION PART 750--HIGHWAY BEAUTIFICATION--Table of Contents Subpart B--National Standards for Directional and Official Signs Sec. 750.155 State standards. This part does not prohibit a State from establishing and maintaining standards which are more restrictive with respect to directional and official signs and notices along the Federal-aid highway systems than these national standards. [38 FR 16044, June 20, 1973, as amended at 40 FR 21934, May 20, 1975] [[Page 377]] Subpart C [Reserved]