To take trafficdispersion measures timely for a traffic incident, a new method for determining the impact area of incident is proposed.
为便于针对交通意外事件及时采取交通疏导措施，提出了一种城市交通意外事件影响范围确定方法。
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The dispersion situation along typical roads was simulated using the line source dispersion model-CALINE4, developed by California traffic department and recommended by USEPA.