The U.S. Transportation Department’s Federal Motor Carrier Safety Administration (FMCSA) ordered Denny Mekenye, a Texas-based company doing business as Demco Express and Demco Trans Inc., to immediately stop all transportation offerings and services because of serious safety violations that pose an immediate hazard to public health and safety. The FMCSA said it uncovered multiple federal safety violations concerning drug testing, driver qualifications, driver hour-of-service compl...