Intersection Analysis

Intersection Analysis is the systematic evaluation of how vehicles, pedestrians, and cyclists interact at road junctions to assess safety, capacity, and operational efficiency. Using traffic count data, turning movement studies, and crash records, analysts identify problem intersections and recommend design or signal improvements that reduce delays and prevent collisions. Key analytical methods include level-of-service assessment, which rates intersection performance from A (free flow) to F (severe congestion), and conflict point analysis, which maps locations where vehicle paths cross, merge, or diverge. GISGISGeographic Information Systems (GIS) enable users to analyze and visualize spatial data to uncover patterns, relation...-based crash mapping overlays collision records to identify high-risk intersections requiring safety countermeasures such as roundabouts, protected left turns, or pedestrian signals. Applications include traffic impact studies for new developments, corridor improvement planning, and Vision Zero safety programs. Transportation agencies use intersection analysis to prioritize capital investments and signal upgrades. Urban planners evaluate intersection design for pedestrian friendliness and ADA compliance. Emergency services assess intersection layouts to ensure unimpeded response vehicle access.