Patent ID: 8532965
Filing Date: 2013-09-10
Classification: G08G

Abstract:
1. A system for traffic simulation of a road network, comprising: a traffic simulator having at least one processor configured to perform traffic simulation by a microsimulation method, to predict a traffic condition on an object road of the road network, by using road parameters defining the road network and model parameters being initial-value parameters; and; a display controller configured to control a display unit to perform functions including; displaying a dynamic image showing a traffic condition of vehicles running on the road network, on the screen of the display unit, as a result of the traffic simulation, which has been output from the traffic simulator, and changing the image displayed on the screen, in terms of pattern, in accordance with a display instruction, wherein: the traffic simulator includes: a reproduction process unit configured to calculate the model parameters based on a simulation in which each vehicle model is made to run on the object road; an event generation unit having a trouble-vehicle setting unit and a traffic-volume limit setting unit configured to designate a specific point on the road and a specific vehicle on the road and generate event data representing an event that causes traffic congestion on the object road, the event being a trouble with any vehicle and an traffic accident on the object road; and a prediction unit configured to perform traffic simulation in which a number of vehicle models are made to run on the object road of the road network, using the road parameters and the model parameters, and to calculate, as the result of the traffic simulation, time-serial data for predicting the behavior of each vehicle model, the time-serial data containing position data representing the positions of all vehicle models in the traffic congestion at predetermined time interval based on the event data; and the display controller uses the time-serial data in accordance with a reproduction instruction, causing the display unit to display an animation in which the vehicle models change position on the road network over time.