A Comparison Study of Motorized Vehicles’ Trajectory in Mixed-Traffic Flow with and without Non-Motorized Vehicles

Mixed-traffic streams that contain motorized vehicles (m-vehicles) and non-motorized vehicles (nm-vehicles) are very common in urban areas, especially in the branch without physical isolation of m-vehicles and nm-vehicles. To study the impact of m-vehicles on nm-vehicles, a comparison study between driving m-vehicles with and without nm-vehicles on their right sides was conducted. Data was collected by video recorder at one cross section of a road. Mixed-traffic analysis has focused mainly on the flow rate, variation of speed, acceleration, and headway as indicators to reveal driving behavior. In particular, this paper discusses the nm-vehicles’ impact on the m-vehicles’ trajectory when the m-vehicles and nm-vehicles are on the same cross section of road. Statistical results show that the lateral position of m-vehicle is related to the lateral position of nm-vehicle on its right side, especially, when the nm-vehicles is close to the m-lane. The potential hazard of nm-vehicle’s behavior was also determined.