Delay Model Development of Median U-turn Intersections on a Multilane Divided Highway in Metro Manila

This study provides a comprehensive analysis of traffic delays at U-turn slots in Metro Manila. The primary goal is to develop accurate traffic delay models that can assist traffic engineers in optimizing U-turn slot designs and operations. Data collection spanned two months, during which traffic operations were meticulously observed and recorded. A regression analysis was conducted using data from 40 carefully selected observations for all of the selected U-turn slots, ensuring minimal interference from external factors such as unusual traffic conditions. The findings indicate a strong linear association between conflicting traffic volume and turning delays while U-turning traffic volume shows a slightly less linear but still significant relationship. The study concludes that traffic delay models can predictively assess the effectiveness of a U-turn slot on different conflicting and U-turning traffic volumes. This study underscores the need for targeted interventions and ongoing research to mitigate traffic congestion in Metro Manila, providing valuable insights for traffic authorities and planners.