Comparative analysis of performance analysis, air pollution at an intersection using at grade and grade separation

Traffic congestion is the prime consideration for design engineers to consider. National highways are being widened to accommodate the increased traffic on roads. Also NH’s are being elevated within the city premises to provide undisturbed flow. A crowded intersection may be improved by using grade separated intersection. Performance of these intersections could be evaluated using theoretical methods or simulation based upon mathematical models. VISSIM is a microscopic, and behavior based simulation model developed to analyze the full range of functionally classified roadways and public transportation operations. Common uses for these packages include highway and major road surveys, subarea planning surveys, evacuation plans, highway management strategy development, environmental impact surveys, intelligent transportation system (ITS) assessments, These include current and future traffic management systems. Results of simulation can be deduced in different ways. In this study, an effort has been made to compare the effect of constructing a flyover on a congested staggered intersection on NH2 in Mathura District. Problems were identified for the selected intersection, also various factors like Queue length formation, LOS, delay at intersections, stop average, air pollutants were compared for the both conditions i.e. at-grade intersection vs grade separated intersection.