中文摘要：

在录像观测数据的基础上,提出了更为符合实际的三车道不同车道间车辆换道的源汇项。在此基础上完善了三车道车辆换道的连续性方程,并与动量方程一起组成完整的数学模型。对三车道扰动问题与单车道进行模拟比较,发现扰动波传播速度几乎相同,只是三车道扰动更容易衰减。对不同形式的三车道交通流数值模型进行对比分析后,发现不同模型下扰动波的定性发展趋势几乎相同：中低密度扰动幅度逐渐衰减,中高密度扰动幅度有先衰减后增大的趋势,且各向异性模型下扰动波幅度增大的趋势更强烈。

英文摘要：

According to video data,the source and sink function of different vehicles changing lanes on the three-lane was proposed,that is more close to the real situation. On the basis of the function,the three-lane continuity equation was improved. Together with momentum equation,the three-lane continuum traffic model was set up. By comparing disturbance wave speed in three-lanes with that in single lane,there is little difference between them. But the fluctuation range in three-lane declines more quickly. Numerical results show that the models based on different source-sink item and momentum equation have similar characteristics. The fluctuation range under middle-lower vehicle density declines gradually,the fluctuation range under middle-higher vehicle density declines first and increases later,and the trend of amplitude grows much stronger in anisotropic model.