What factor determines the placement of signs in a construction zone?

The placement of signs in a construction zone is primarily determined by the speed limit of the road. Signage is critical for ensuring the safety of both drivers and workers, and it must effectively communicate any changes in roadway conditions or upcoming hazards.

When traffic is traveling at higher speeds, the need for early and clear warning signs increases, allowing drivers sufficient time to react and adjust their speed. Consequently, the placement of signs will be strategically located to alert drivers well in advance of the construction zone, especially when the speed limit is higher. This proactive measure helps to reduce the likelihood of accidents and enhances overall traffic safety by guiding drivers appropriately and ensuring that they are aware of the changes in their driving environment.

Other factors, such as the size of the construction crew, the type of machinery used, and the duration of the project, while important for different logistical aspects of the construction work, do not directly influence the placement of signs to the same extent as the speed limit. The key focus in sign placement is primarily about providing timely and relevant information to drivers to maintain safe driving conditions in and around a construction zone.