The New Jersey Department of Transportation (NJDOT) commissioned a study to evaluate how effective a work zone safety device known as the “SonoBlaster! ® Work Zone Intrusion Alarm” would be in … [Read more...] about Work Zone Intrusion Alarm Effectiveness
Measures of Effectiveness
Effectiveness of Changeable Message Signs in Controlling Vehicle Speeds in Work Zones – Phase II
This report is the second phase of a longitudinal research study. The first phase of the project, conducted by Garber and Patel, examined the short term effectiveness of CMS in reducing vehicle speeds … [Read more...] about Effectiveness of Changeable Message Signs in Controlling Vehicle Speeds in Work Zones – Phase II
Safety Effects of Fluorescent Yellow Warning Signs at Hazardous Sites in Daylight
Yellow warning signs are an important and abundant type of traffic control device. Improving warning signs could be a cost-effective countermeasure at hazardous locations. The use of fluorescent … [Read more...] about Safety Effects of Fluorescent Yellow Warning Signs at Hazardous Sites in Daylight
Use of Chevron Patterns on Traffic Control Devices in Work Zones (Abridgement)
The objectives of the research were to select the most effective design for the chevron pattern and to evaluate the effectiveness of selected chevron designs under road conditions as compared with … [Read more...] about Use of Chevron Patterns on Traffic Control Devices in Work Zones (Abridgement)
Alternative Sign Sequences for Work Zones on Rural Highways
Two experiments were done on a two-lane rural road (US-2) in central Maine to evaluate the effectiveness of alternate signing sequences for providing warning to motorists of construction and … [Read more...] about Alternative Sign Sequences for Work Zones on Rural Highways
Temporal Speed Reduction Effects of Drone Radar in Work Zones
Three experiments were conducted to evaluate the effectiveness of using drone (passive or unmanned) radar guns on vehicle speeds in work zones. Experiment 1 was an exploratory study to determine the … [Read more...] about Temporal Speed Reduction Effects of Drone Radar in Work Zones