Field Testing of an Automated Flagger Assistant Device in Missouri Reduces Vehicle Approach Speeds by Four Miles Per Hour and Increases Stopping Distance by 11 Feet. Methodology: For the field study, video data that recorded driver behaviors was collected for two days in a work zone on MO 23 in Knob Noster, Missouri. Seven Measures of Effectiveness (MOEs) were… Content type Benefit Date Posted 08/23/2021 Taxonomy (ARC-IT) Incident Scene Safety Monitoring (PS07), In-Vehicle Signage (TI07), Dynamic Roadway Warning (TM12), Autonomous Vehicle Safety Systems (VS01), Reduced Speed Zone Warning / Lane Closure (VS09) Geolocation links Lone Jack, Missouri, United States | Knob Noster, Missouri, United States