Arkansas Best Corp. said it will freeze its defined benefits plan for nonunion employees, as of July 1.

Arkansas Best Corp., fresh from winning a tentative contract with the Teamsters union for its less-than-truckload unit, last week said that it rebuffed an acquisition overture from competitor YRC Worldwide Inc.

An Arkansas committee that spent two years studying how to pay for road improvements has come up with a list of ways to raise revenue that includes indexing gas and diesel taxes to the state’s construction cost index.