Amarasingha, NILHAAM, M. M2022-04-062022-04-062019https://rda.sliit.lk/handle/123456789/1903Four signalized intersections were selected which located in Colombo suburban, Battaramulla, Pelawatte, Thalawthugoda and Denzil kobbekaduwa. The observational survey was conducted for both peak and off-peak hours. Totally, 118,837 vehicles were observed and categorized them into three types; motor vehicles, motorcycles, and three wheelers. The Red Light Running (RLR) violation rate was 0.94% for motor vehicles, 2.44% for motorcycles, and 1.33% for three wheelers. The rate for motorcyclists was high in off-peak hours than peak hours. The RLR violation rate of motor vehicle drivers is lower than those for motorcyclists. The observed drivers were classified into two age groups: young and adult and more RLR violation rate was observed by young drivers than adults. Young drivers were found to be more likely to have risk-taking and adult drivers were found to be more likely to have opportunistic behaviors.enRed Light RunningTraffic Rule ViolationsTraffic SafetySignalized intersectionArticle