DTA Please, sir, may I have some more? University community would like more bus service at UMD By Lisa Johnson • Mar 14, 2017 Sam Quackenbush Can there be too much enthusiasm for public transportation? The Duluth Transit Authority is currently grappling with that situation. 3/18/15 Electric Buses By Lisa Johnson • Mar 18, 2015 Proterra A recent federal grant to the Duluth Transit Authority will bring some new improvements to the DTA fleet. Two words: electric buses. DTA Director Jim Heilig explains.