GRADE CROSSING SAFETY.

SEC. 112. GRADE CROSSING SAFETY. The Secretary of Transportation shall, within 6 months after the date of enactment of this Act, amend regulations— (1) under chapter 51 of title 49, United States Code (relating to transportation of hazardous materials), to prohibit the driver of a motor vehicle transporting hazardous materials in commerce, and (2) under chapter 315 of such title (relating to motor carrier safety) to prohibit the driver of any commercial motor vehicle, from driving the motor vehicle onto a highway-rail grade crossing without having sufficient space to drive completely through the crossing without stopping.