Keywords: US truck driver workforce by demographic group.svg en Shares of the U S truck driver workforce by demographic groups current and projected 2004-2014 http //www gsa gov/gsa/cm_attachments/GSA_DOCUMENT/ATADriverShortageStudy05_R25-c-d_0Z5RDZ-i34K-pR pdf ErgoSum88 2009-06-28 File Truck driver workforce by age PNG Trucks in the United States |