Truck Driver Positive Tests for Marijuana Up 9.2% in Q1
Since the Clearinghouse opened in January of 2021, 110,856 drivers have tested positive for marijuana. (KLH49/GettyImages) [Stay on top of transportation news: Get TTNews in your inbox.] The number of truck drivers testing positive for marijuana use increased 9.2% the first three months of 2023, and a large number of ... Read More