B&A to Worcester, MA. From there the traffic will come up the Worcester main and into Ayer Yard. On March 25, 2021, after numerous letters questioning CSX's acquisition of Pan Am Railways parent Pan Am Systems from the Massachusetts Bay Transportation Authority, the Massachusetts Department of Transportation, the Commonwealth of Massachusetts, Vermont Rail System, as well as many other local political figures and community leaders from other New England states, the Surface Transportation Board ruled the acquisition as "Significant" meaning that a more rigorous review process would be necessary. On April 30, 2021, CSX submitted a 478-page plan of purchase outlining a broad range of topics, from implementations of track upgrades to the controversial issue of Norfolk Southern intermodal routing, as well as the fate of Pan Am's hodgepodge fleet of aging motive power, which is made up of EMD and GE locomotives from railroads such as Conrail, NS, CSX, the Milwaukee Road, and Kansas City Southern. On May 26, 2021, the federal regulators of the Surface Transportation Board rejected CSX's purchase application, deeming it "incomplete." The board cited "contradictions" and "lack of necessary information" to properly judge the acquisition, and therefore could not rule on the matter. The STB accepted a revised merger application for consideration on July 30, allowing CSX to move forward with the acquisition. The decision determined that an environmental and historic review are unnecessary and establishes criteria for additional filings, public comments, and a deadline for a final Surface Transportation Board decision. On April 14, 2022 The Surface Transportation Board fully accepted the purchase by CSX Transportation of Pan Am Railways and 50% of Pan Am Southern. According to the board; CSX’s control of Pan Am and subsequent merger of six of Pan Am’s subsidiary railroads into CSX, subject to the voluntary commitments and settlement agreements to which the applicants have agreed, would not likely cause a substantial lessening of competition or create a monopoly or restraint of trade. "The Board found several key benefits flowing from the merger. It would result in much-needed capital investments in the Pan Am network, as well as more consistent maintenance. Also, the Board found that shippers would have additional marketing opportunities and more efficient single-line service, and CSX would have the opportunity to better compete for traffic moving via long-haul trucking. The Board also noted environmental benefits in the form of fuel efficiency and lower emissions resulting from