A professional who controls movement of vehicular traffic through construction projects. Respnsibilities include:

• Discusses traffic routing plans, and type and location of control points with superior.
• Distributes traffic control signs and markers along site in designated pattern.
• Directs movement of traffic through site, using sign, hand, and flag signals.
• Warns construction workers when approaching vehicle fails to heed signals to prevent accident and injury to workers.
• Informs drivers of detour routes through construction sites.
• Records license number of traffic control violators for police.
• May give hand marker to last driver in line up of one-way traffic for flagger at opposite end of site, signaling clearance for reverse flow of traffic.