Which of the following is a common type of work zone setup?

Lane closures are a common type of work zone setup because they are frequently used to manage traffic flow safely around construction or maintenance activities on roadways. When work is being performed in or near a travel lane, temporarily closing that lane helps protect both workers and motorists by minimizing exposure to the work area. This type of setup often involves delineators, cones, and signage to guide drivers through the work zone and ensure they remain at a safe distance from the area where operations are occurring.

While lateral lane expansions, overhead signage systems, and intermittent road signals can also play a role in traffic management, they are not as universally applied or recognized as lane closures in work zone contexts. Lane closures are necessary in a wide variety of situations, making them the most prevalent work zone setup encountered in highway construction and associated activities.