The Federal Motor Carrier Safety Administration declared Georgia-licensed truck driver Robert Lee Turner an imminent hazard to public safety after an incident involving a controlled substance. He has been ordered not to operate any commercial vehicle in interstate commerce.

On March 2, Turner was operating a truck at the Port of Savannah when he struck a Georgia Port Authority Police Officer with his truck, seriously injuring the man. Turner was arrested and charged by the Georgia State Patrol with driving under the influence of a controlled substance.

A later drug test of Turner tested positive for cocaine. The officer, Corporal William Solomon, is currently in a coma, according to a report by WJCL News.

“Commercial drivers should have no doubt that we will vigorously enforce all federal safety regulations to the fullest extent possible by law,” said FMCSA Chief Counsel Scott Darling.  “FMCSA is committed to raising the bar for commercial vehicle safety, and we will remain vigilant in removing unsafe truck and bus drivers from our roadways.”