— Union Pacific expects to file its revised Norfolk Southern merger application in March, CEO Jim Vena said on the railroad’s earnings call on Tuesday. The Surface Transportation Board on Jan. 16 rejected the railroads’ 6,692-page merger application as incomplete. The U.S. Class I railroads have historically opposed regulatory efforts to open sole-served customer locations to a second railroad. “I told the STB chair way before we got into the merger discussions that I’m not afraid of interswitching or reciprocal switching. The STB has said it would take a case-by-case approach to shipper requests for access to a second railroad.