What is the purpose of police units in regard to work zone traffic control?

The purpose of police units in work zone traffic control is to heighten the awareness of passing motor vehicle traffic and improve safety. By having police presence in work zones, drivers are more likely to notice the change in traffic patterns and to be cautious as they navigate through potentially hazardous areas. The visibility of police units serves as a significant reminder for drivers to adhere to traffic regulations, drive slowly, and pay attention to construction signs and worker safety.

This active engagement from law enforcement fosters a safer environment for both workers on-site and drivers passing through. The presence of police helps to mitigate risks that could lead to accidents, ensuring that everyone involved operates under increased vigilance. While the other choices address various aspects related to police duties, they do not prioritize the primary role of enhancing safety and awareness in work zones as effectively as this answer does.