Which of the following is NOT an effective way to alert traffic about construction?

Movement by construction equipment is not considered an effective way to alert traffic about construction for several reasons. While the presence of construction equipment does signal that work is happening, it doesn't actively communicate messages to drivers about the need to slow down, stop, or navigate safely around the site.

Effective traffic alerts should be clear, directly visible, and easy to interpret to enhance safety. Flashing lights, signs waved by a person, and properly placed cones and barriers are specifically designed to grab attention and convey essential information about changing road conditions or the presence of hazards. These tools help ensure that drivers are appropriately informed and can take the necessary precautions as they approach a construction zone.

In contrast, relying solely on the movement of construction equipment can lead to misunderstandings or misperceptions among drivers, as they may not interpret the equipment's movement as a warning appropriately. It's important that traffic alerts are both proactive and coherent to minimize accidents and ensure the safety of both workers and drivers.