Traffic barricades are essential for managing traffic flow and improving safety in work zones and other temporary traffic control situations. These barriers help to prevent vehicles from entering a restricted area, protect workers and pedestrians, and provide clear guidance to motorists.

The Manual on Uniform Traffic Control Devices (MUTCD) is a comprehensive guidebook published by the Federal Highway Administration (FHWA) that issues guidance for designing, installing, and maintaining traffic control devices on public roads in the United States. In addition, the MUTCD includes guidelines for the use of traffic barricades and other temporary traffic control devices to ensure the safety of workers and road users in work zones.

Early Road Barriers

     Early forms of road barriers were often simple and temporary, consisting of wooden planks, logs, or fences placed across roadways to block access. These barriers were basic in design and were used primarily to divert traffic or prevent entry into specific areas. Their effectiveness was limited by their lack of visibility and durability.

Introduction of Reflective Materials

     The incorporation of reflective materials revolutionized the visibility of traffic barricades. Reflective strips or panels were added to barricades to enhance their visibility during nighttime and low-light conditions. Reflective materials significantly increased the safety of road workers and drivers by making barricades more noticeable from a distance.

Types of Barricades and Barriers

Several types of traffic barricades are commonly used in work zones and other areas where traffic control is required. The most common styles include:

Plastic Traffic Barricades: These are lightweight, durable, and easy to move, making them ideal for use in work zones or other temporary areas where traffic control is required. They are typically made from high-density polyethylene with reflective tape or lights for improved visibility.

Concrete Jersey Barriers: Concrete jersey barriers are large, heavy concrete barriers designed to provide a high level of protection for workers and the public. They are commonly used in long-term construction projects or areas where a higher level of protection is required.

Water-Filled Barricades: Water-filled barricades are similar to plastic barricades but are filled with water to provide additional weight and stability. They typically are approximately 5 ft in length and 3 ft in tall. They are commonly used in work zones or areas requiring a temporary barrier. Various accessories can be added to these which include fencing and lights.

Steel Barricades: Steel barricades are durable and long-lasting.

Pedestrian Barricades: These portable barriers are designed to prevent pedestrians from entering a work zone or construction area. They are often used to create a safe walking path for pedestrians and to protect workers from foot traffic.

Type 1 Barricades: Commonly seen as Type I Barricades also called a-frame, sidewalk, and sandwich board barricades. Their legs generally fold together making them compact and are typically made of lightweight materials. They are used for short-term closures, delineating work areas, or redirecting pedestrian traffic. With one or two horizontal panels and reflective sheeting on the top panel only. These barricades enhance visibility and are suitable for low-speed roadways, parking lots, or areas with minimal traffic.

Type 2 Barricades: Commonly seen as Type II Barricades Look just like Type I barricades except they have sheeting on both the top and bottom horizontal panels. Type II barricades are ideal for intermediate-term projects, construction zones, channelizing traffic, and areas with moderate traffic speeds. Their increased visibility make them effective at capturing attention from a distance.

Type 3 barricades: Commonly seen as Type III Barricades are the largest and most visible of the three types. They are wider than type I and type II barricades, generally anywhere from 4 ft. to 12 ft. in length and typically about 5 ft. tall. They feature three horizontal boards or I-beams that have reflective sheeting. Type III barricades are typically used for long-term projects, highway work zones, road closures, or areas with high-speed traffic, ensuring maximum safety and visibility.

A-frame Barricades: A-frame barricades can be used with one a-frame leg or two legs and one beam or two. Beams typically have reflective sheeting for increased visibility during day and night and are anywhere from 6 ft. to 10 ft. in length. They have various applications, including traffic control, construction sites, events, parking lots, and temporary closures. A-frame barricades are useful for guiding traffic, managing crowds, marking boundaries, and indicating restricted areas.

Barricade Lights: Most barricades have areas where barricade lights can be attached.

Smart and Technological Barricades: In recent years, technological innovations have been integrated into traffic barricades. Some modern barricades are equipped with sensors, lights, and communication capabilities. These "smart" barricades can provide real-time data on traffic flow, congestion, and road conditions, enhancing the efficiency of traffic management efforts.

Eco-Friendly Barricades: With increasing focus on sustainability and environmental consciousness, eco-friendly barricades have emerged. These barricades are made from recycled materials, are easily recyclable, or have minimal environmental impact. By reducing waste and promoting sustainability, these barricades align with contemporary environmental priorities.

Selecting the Barricade or Barrier for Your Needs

When selecting and deploying traffic barricades, follow these essential rules to ensure maximum safety and effectiveness:

Conduct a Site Assessment: Before deploying barricades, identify potential hazards, traffic patterns, and other factors that may impact the selection and deployment of barriers.

Ensure compliance with MUTCD standards: The MUTCD sets specific criteria for the design, placement, and use of traffic control devices. Ensuring that the barricades selected and deployed meet these standards is essential.

Choose the Right Type of Barricade: The selected barricade should be appropriate for the specific application and meet all relevant safety standards and regulations. The MUTCD issues guidance on the types of barriers suitable for different work zone scenarios. 

Train personnel: It is essential to train personnel responsible for selecting and deploying barricades adequately, using the MUTCD manual, and the appropriate placement of barricades.

Use Barricades to Control Traffic Flow: Use barricades to redirect traffic away from a work zone or to create a safe walking path for pedestrians.

Adequate Signage: Use appropriate signage to inform motorists of the work zone, detours, or lane closures. This includes placing warning signs before the barricades to give drivers time to react and clear directional signs to guide them through the detour.

Ensure Barricades are Visible: Barricades should be highly visible and equipped with reflective material or lighting to ensure they are visible in low-light conditions.

Monitor and Maintain Barricades: Barricades should be regularly monitored, inspected, and maintained to ensure they remain stable and effective in managing traffic flow.

Conclusion

Traffic barricades are an essential tool for ensuring the safety of workers and motorists in work zones, construction sites, and other areas where traffic needs to be redirected or controlled. By choosing the right type of barricade, placing them correctly, using adequate signage, and regularly inspecting them, we can help ensure they effectively protect workers and motorists. In addition, by following best practices for deploying traffic barricades, we can reduce the risk of accidents and provide a safer work environment.