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Traffic Control Measures:

Traffic control measures encompass various elements implemented as part of a traffic control plan to manage and regulate traffic flow through work zones. These measures include, but are not limited to, traffic control devices, personnel, materials, and equipment.

Components of Traffic Control Measures:

Traffic Control Devices:

  • Signage: Regulatory signs, warning signs, guide signs, and other signage placed strategically to communicate rules, hazards, directions, and information to road users.
  • Signals: Traffic lights, pedestrian signals, temporary signals, and other signaling devices used to regulate traffic flow and pedestrian movements.
  • Road Markings: Lane markings, crosswalk markings, temporary pavement markings, and other markings to delineate lanes, paths, and areas for vehicles and pedestrians.


  • Flaggers: Trained personnel stationed at work zone entrances, exits, and critical points to direct traffic, control lane closures, and ensure the safety of workers and road users.
  • Supervisors: Experienced personnel responsible for overseeing traffic control operations, coordinating resources, and making decisions to optimize traffic flow and safety.


  • Traffic Cones: Cones, barrels, barricades, and delineators used to channelize traffic, create buffer zones, and mark boundaries within work zones.
  • Warning Lights: Flashing lights, beacons, and strobes mounted on traffic control devices or vehicles to increase visibility and alert drivers to hazards and changes in road conditions.


  • Arrow Boards: Portable or mounted electronic boards displaying directional arrows, messages, and symbols to guide traffic, indicate lane closures, and provide advance warning of work zone activities.
  • Portable Traffic Signals: Temporary traffic signal systems deployed at intersections or work zone entrances to regulate traffic flow and replace traditional traffic lights during construction or maintenance activities.

Communication Systems:

  • Two-Way Radios: Communication devices used by flaggers, supervisors, and workers to coordinate traffic control efforts, report incidents, and respond to emergencies in real-time.
  • Message Boards: Dynamic message signs and electronic display boards conveying important information, instructions, and safety messages to motorists approaching work zones.

Objectives of Traffic Control Measures:

  • Safety: The primary goal of traffic control measures is to enhance safety for both workers and road users by minimizing the risk of accidents, collisions, and injuries within work zones.
  • Efficiency: These measures aim to maintain efficient traffic flow and minimize disruptions to transportation networks during construction, maintenance, and utility work.
  • Compliance: Traffic control measures ensure compliance with regulatory requirements, industry standards, and best practices for managing traffic in work zones.

Implementation and Monitoring:

  • Planning: Traffic control measures are developed as part of a comprehensive traffic control plan tailored to the specific requirements and conditions of each work zone.
  • Implementation: Qualified personnel are responsible for deploying, maintaining, and adjusting traffic control measures as needed to address changing traffic patterns, weather conditions, and work zone dynamics.
  • Monitoring: Ongoing monitoring and evaluation of traffic control measures help identify potential issues, assess effectiveness, and make necessary adjustments to optimize safety and efficiency.

Traffic control measures encompass a range of elements designed to manage and regulate traffic flow through work zones while ensuring the safety of workers and road users. By implementing appropriate traffic control devices, deploying trained personnel, and utilizing advanced equipment and technology, transportation agencies and construction firms can mitigate risks, minimize disruptions, and facilitate the safe and efficient completion of infrastructure projects.

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