Modeling the influence of road humps parameters on the operation of an uncontrolled intersection

Abstract

The article investigates the influence of the design parameters of road humps on the speed of vehicles and the operation of uncontrolled intersections. Proper design of road humps provides a reduction in speed and increased safety, while errors in the selection of parameters lead to increased delays, additional fuel consumption, and increased emissions.

The aim of the study is to develop models for predicting changes in vehicle speed depending on the geometric characteristics of the road hump. For this purpose, a series of experiments was conducted in the PTV VISSIM environment with changes in width (1–3 m), height (0.03–0.10 m), and distance from the stop line (10–50 m). The height was taken into account through the parameters of the speed reduction zone. Processing the results in STATISTICA allowed us to build regression models with high adequacy (R² = 0.83–0.92).

It was established that the height of the road hump has the greatest impact on speed reduction, while the width and distance to the stop line determine the nature of deceleration in a more complex relationship. The optimal selection of parameters allows for the provision of the effect of traffic calming without significant loss of capacity and with minimal environmental consequences. The results can be used in transport planning, design of the street and road network, and in assessing the effectiveness of traffic calming measures in Ukrainian cities.

Key words: road hump, vehicle, traffic flow, simulation, speed, height, width, distance from the stop line, microsimulation, model.