Influence of Intelligent Connected Signs for Traffic Flow and Lane-Changing Behavior

With the concept of Intelligent Traffic(IT) proposed, intelligent connected road infrastructures have become a new trend. Intelligent Connected Signs(ICS) are one of products of IT, that can illustrate different colors and arrival time according to traffic flow on the ahead, as well as different colors included red, yellow, green which respectively represents congestion, slow traffic and smooth traffic. The author supposes that solutions to solve traffic congestion are traffic flow diverted in a range and drivers having enough time to change lanes smoothly. In order to verify the impact of ICS on traffic flow, the author utilizes PTV-VISSIM and Python as secondary traffic dynamic planning to compare total delay time and average travel time in a fixed route whether there is dynamic guidance. In the end, it is concluded that ICS greatly improve the congestion condition. Drivers’ lane-changing behavior is also influenced by the setting of ICS, so that the author utilizes CarSim, and Simulink software setting horizontal and longitudinal control strategies to build the driver’s lane-changing model. The output results of the speed after lane-changing and time of lane-changing are illustrated for the setting of ICS.