; and (B) shall rescind any special permit or approval for the transportation of liquefied natural gas by rail tank car issued before the date of enactment of this Act. 8203. Hazardous materials training requirements and grants Section 5107 of title 49, United States Code, is amended by adding at the end the following: (j) Assistance with local emergency responder training The Secretary shall make grants to nonprofit organizations to develop hazardous materials response training for emergency responders, including response activities for the transportation of crude oil, ethanol, and other flammable liquids by rail (consistent with National Fire Protection Association standards), and to make such training available electronically or in person. . 8204. Study on hazardous materials transported by commercial motor vehicles on highway-rail grade crossings (a) Study (1) In general The Secretary of Transportation shall conduct a study to evaluate the overall safety of the requirement that commercial motor vehicles come to a full stop at highway-rail grade crossings described in section 392.10 of title 49, Code of Federal Regulations. (2) Contents The study required under paragraph (1) shall— (A) collect and analyze data on the frequency and severity of rear-end collisions that occur when commercial motor vehicles transporting hazardous materials are stopped at grade crossings; (B) assess the extent to which such requirement reduces instances of truck-train collisions; (C) evaluate the overall safety of such requirement