Name a common traffic control device used for lane closures.

Barricades are a fundamental traffic control device used for lane closures because they serve to physically block off sections of the roadway to ensure the safety of both drivers and workers in the vicinity of a work zone. Their sturdy structure not only provides a clear visual indication of a lane closure, but they also help prevent vehicles from inadvertently entering areas that are unsafe or under construction.

While traffic cones, flashing lights, and road signs also play important roles in traffic management, they primarily serve as supplementary devices or indicators rather than as physical barriers. Traffic cones help guide and direct traffic but can be easily displaced. Flashing lights provide visibility and alertness but do not restrict access. Road signs communicate instructions to drivers but do not provide a physical barrier to a lane. Therefore, when a robust physical barrier is required to enforce lane closures, barricades are the most common and effective choice.