TITLE:
Observations of Driver Compliance with Dynamic No Right Turn on Red Signs at Signalized Intersections
AUTHORS:
Yuhan Zhang, Shoaib Mahmud, Meenakshi Sumeet Arya, Pratik Sapkota, Anuj Sharma, Christopher M. Day
KEYWORDS:
Signalized Intersections, Right-Turn Movements, Compliance Behavior, Dynamic Blank-Out Signs, Traffic Safety
JOURNAL NAME:
Journal of Transportation Technologies,
Vol.15 No.4,
October
22,
2025
ABSTRACT: This paper examines driver compliance with No Right Turn on Red (NRTOR) restrictions at eight signalized intersections in Minnesota, where six locations were equipped with pedestrian- or time-of-day-activated dynamic blank-out signs and two locations displayed conventional static signs. High-resolution video observations were used to quantify right-turning driver responses. Compliance was measured using two perspectives: proportion of compliant cycles and proportion of compliant vehicles. The results showed that static signs were generally associated with higher compliance, yielding 80.0% per-cycle and 92.4% per-vehicle compliance, compared with 60.8% and 87.1% for dynamic signs. Logistic regression models were further applied to assess statistical significance and to evaluate how NRTOR effectiveness compares with other geometric and operational factors influencing driver behavior.