关键词: 多尺度，宏观，中观，微观，交通路网优化，仿真

Abstract: City traffic simulation research is more, but there are some problems that transportation systems in spatial scales are integrated from the micro to the macro highly, and complexity of the traffic system determines any of a single-scale integration is difficult to make better objective simulation to transport phenomena. On this basis, proposed a simulation system based on multi-scale fusion to use the corresponding algorithm do integration from the macro, meso and micro scale and system design. Finally, this paper made experiments the city traffic network optimization simulation system based on multi scale fusion. The experiment proves the usefulness and reliability of the system.

Key words: Multi scale, Macro, Outlook, Microscopic, Traffic network optimization, Simulation