Mixed traffic flow observed in Indian conditions is characterized by diverse behavior exhibited by different categories of vehicles. This study focuses on analyzing the forced gap behavior of vehicles at unsignalized three-legged intersections under a mixed traffic scenario. A vehicle from a minor street entering a major street causes the major street vehicle to suddenly reduce its speed. This gap created in the higher-priority stream due to the aggressive behavior of the lower-priority stream is termed forced gap behavior. The objective of this study is to analyze the forced gap behavior of vehicles at unsignalized three-legged intersections for different conditions, such as T-intersection and intersections with speed hump, and at locations with different geometrics, such as intersections at a valley curve and a horizontal curve. The speed reduction threshold value to characterize forced gap behavior is also compared for each of these scenarios. This study also quantifies the influence of speed bumps on minor road approaches on the forced gap behavior.