... Technician may lead the daily activities of a crew or construction contractors under the general direction of ... alcohol testing require Requires ATTSA Traffic Control Technician (TCT) certification or IMSA Work Zone ...

... certifications: ATTSA Traffic Control Technician or IMSA Work Zone Temporary Traffic Control Technician, IMSA Level I Sign & Markings IMSA Level I Signals IMSA Level II Traffic Signal Technician or Electrician ...