[Code of Federal Regulations] [Title 49, Volume 2] [Revised as of October 1, 2005] From the U.S. Government Printing Office via GPO Access [CITE: 49CFR177.810] [Page 779-780] TITLE 49--TRANSPORTATION CHAPTER I--PIPELINE AND HAZARDOUS MATERIALS SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION PART 177_CARRIAGE BY PUBLIC HIGHWAY--Table of Contents Subpart A_General Information and Regulations Sec. 177.810 Vehicular tunnels. Except as regards Class 7 (radioactive) materials, nothing contained in parts 170-189 of this subchapter shall be so construed as to nullify or supersede regulations established and published [[Page 780]] under authority of State statute or municipal ordinance regarding the kind, character, or quantity of any hazardous material permitted by such regulations to be transported through any urban vehicular tunnel used for mass transportation. [Amdt. 177-52, 46 FR 5316, Jan. 19, 1981, as amended by Amdt. 177-78, 55 FR 52710, Dec. 21, 1990; 62 FR 51561, Oct. 1, 1997]