Conduct field studies to determine traffic volume, speed, effectiveness of signals, adequacy of lighting, and other factors influencing traffic conditions, under direction of traffic engineer.
Operate counters and record data to assess the volume, type, and movement of vehicular or pedestrian traffic at specified times.
Provide technical supervision regarding traffic control devices to other traffic technicians or laborers.
Review traffic control or barricade plans to issue permits for parades or other special events or for construction work that affects rights of way, providing assistance with plan preparation or revision, as necessary.
Study factors affecting traffic conditions, such as lighting or sign and marking visibility, to assess their effectiveness.
Visit development or work sites to determine projects' effect on traffic and the adequacy of traffic control and safety plans or to suggest traffic control measures.
Supervise engineering or other technical personnel.
