Assessing Crash Risks of Unsignalized Intersections in the Absence of Safety-Critical Data

Abstract

Apart from infrastructure development in the transportation sector, many developed nations have heavily invested in data collection and technology integration which eventually helped them enhance the safety and efficiency of their transportation sector. In contrast, the developing and underdeveloped nations are still struggling to cater to the fundamental safe, efficient, and reliable mobility needs of the people. The essential difference lies in the inability to directly adopt the norms, methodologies, approaches, practices employed by the advanced countries by the lagging nations. In this study, a framework for crash risk assessment of unsignalized intersections in absence of safety-critical data, such as crash, conflict, etc. is being proposed to do the needful effectively. Safety of 242 4-leg and 386 3-leg intersections were evaluated, and the results were cross-validated through field investigations. The improvised framework is flexible in terms of data requirements, application, and software implication.