Highways across the United States are filled with billboards leased by trucking companies seeking drivers. According to the American Trucking Association, there is a shortage of 50,000 drivers as a low-end estimate.Seaport Global Securities, a New York-based investment bank, estimates that the shortage could be closer to 100,000 drivers with projections that could reach upward of 180,000 drivers by 2026.According to Kara Deniz, the senior communications manager for the International Brotherhood of Teamsters, the leading …