What are common forms of traffic control devices used on highway projects?

Traffic cones and barricades are essential traffic control devices commonly used on highway projects to ensure the safety of workers, drivers, and pedestrians. Their primary function is to clearly delineate work zones, indicate changes in traffic patterns, and prevent unauthorized access to potentially hazardous areas.

Traffic cones are typically used to guide vehicles, signaling lane closures or directing them around obstacles. They are highly visible, often brightly colored, and can be easily repositioned as the work progresses. Barricades provide a more substantial barrier, restricting access to certain areas and enhancing the overall safety of the worksite. They can also be used to alert drivers to hazardous conditions or changes in road configuration.

In contrast, while motor vehicles and traffic lights do play a role in traffic management, they are not specifically categorized as traffic control devices used in construction zones. Construction workers contribute to traffic control but are not themselves classified as devices. Roadside advertising signs do not serve a safety function in the context of construction projects and are not utilized as traffic control devices.