What is a crucial factor in ensuring effective traffic control during roadwork?

Effective traffic control during roadwork heavily relies on the appropriate placement and visibility of control devices. These devices include cones, signs, barrels, and other traffic control measures that guide drivers through or around the construction zone safely. When these devices are strategically placed and easily visible, they communicate critical information to drivers, such as reduced speed limits, lane shifts, or the presence of workers, thereby enhancing overall safety.

Visibility is particularly vital because it allows drivers to react appropriately to changing conditions in a work zone, reducing the likelihood of accidents. Furthermore, proper placement ensures that the devices effectively direct traffic without confusion, minimizing the risk of collisions or disruptions. This focus on the correct positioning and visibility of control devices creates a safer environment for both road users and construction workers, which is the primary goal of traffic control during roadwork.

Other factors, while important in their own right, do not have the same direct impact on the immediate effectiveness of traffic control as the visibility and placement of devices.