In which month and year did Congress transfer hazardous material transport and safety responsibilities to PHMSA?

Answer: B — February 2005

The transfer of hazardous material transport and safety responsibilities to the Pipeline and Hazardous Materials Safety Administration (PHMSA) occurred in February 2005. This transition was an important step in streamlining and enhancing the regulatory framework surrounding hazardous materials. Congress recognized the need for a more focused agency to handle these responsibilities, leading to the establishment of PHMSA's role in ensuring safety and compliance in the transport of hazardous materials. The timing is significant as it reflects legislative intent to improve safety measures and coordination in hazardous materials transport, addressing concerns over safety incidents and regulatory oversight in the years leading up to that decision.