Compliance and work-zone safety
DOT Drug and Alcohol Testing for Traffic Control Crews: Who Is in the Program and What It Requires
Federal drug and alcohol testing rules follow the commercial driver's license, not the job title. For a traffic control company that usually means attenuator truck and heavy trailer drivers are in the program and flaggers on foot are not. Here is how the rule defines who is covered, the six kinds of tests, the Clearinghouse queries and the records to keep.
Oct 10, 2026 · 13 min read
