Cal. Public Utilities Code § 7672 : California Public Utilities Code — Laws Relating To Utility Corporations And Their Employees — Railroad Corporations — Hazardous Materials Transportation By Rail — Hazardous material defined Date: 14 Sep 2016 TEXT PDF Current through the 2016 Legislative Session For purposes of this article, "hazardous material" means either of the following: (a) A hazardous material, as defined in Section 171.8 of Title 49 of the Code of Federal Regulations. (b) A hazardous material, as defined in Section 25501 of the Health and Safety Code. Ca. Pub. Util. Code § 7672 Amended by Stats 2004 ch 644 (AB 2701), s 32, eff. 1/1/2005.