Research Explores Safer Work Zones for Flaggers

Highway workers face significant dangers, exacerbated by erratic driver behavior in work zones. In response, agencies like the Minnesota Department of Transportation (MnDOT) have pursued innovative solutions. Recent research, led by MnDOT and the University of Minnesota’s HumanFIRST Lab, focused on enhancing safety through smart sign systems. Two prototypes—a modified Stop/Slow paddle and a portable traffic signal—incorporated vehicle trajectory tracking and audiovisual warnings. Testing revealed improved driver compliance and perception with the modified flagger sign compared to the traffic signal. Notably, the vehicle trajectory tracking system successfully identified intruding vehicles. A follow-up pilot study aims to refine the system for remote operation and assess real-world applicability. With a focus on local roads, the research strives for “ultimate” safety by minimizing the need for flaggers on-site. This study underscores the potential of technology to mitigate risks for highway workers and improve work zone safety.