Citing the Federal Railroad Administration’s (FRA) acknowledgement of “little evidence or safety data” in its attempt to mandate two-person train crews, a proposed rule first announced by the FRA in April 2015, Association of American Railroads President and CEO Edward R. Hamberger said, “Safety is this industry’s number one concern, but there is simply no safety case to be made for a regulation that requires two-person crews, especially where Positive Train Control is fully operational.” The rule was published in the Federal Register on March 15, 2016, and public comments are due on May 16.