A conflict-based safety assessment technique for rear-end crash risk at signalized intersections in a lower-middle-income country: A comparison between homogeneous and heterogeneous traffic conditions

•Empirical trajectory data is used to study surrogate safety at signalized intersections.•A vehicle in heterogeneous traffic observes at least twice the number of rear-end conflicts.•Comparatively aggressive driving results in critical SSM values observed for Heterogeneous traffic.•Development of rear-end conflict heat plots for identifying critical locations and comparison.•Vehicles in heterogeneous traffic observe at least three times more rear-end crash risk.