本文对交通流进行仿真 ,收集多点的检测数据 ,验证估测方法并且引入结合车流密度的检测方法。首先 ,文章对已有的估测方法作了简要回顾 ,然后根据仿真模型的结果发现交通流量的融合对于在交通拥挤条件下有更好的估测结果 ,并进一步提出一种融合交通密度的新方法。最后 ,对将来数据融合方法在行驶时间估测中应用的方向进行了讨论 This paper simulates the traffic flow, collects multi-point test data, verifies the estimation method and introduces the detection method combined with traffic flow density. First of all, the article briefly reviewed the existing estimation methods, and then found that the traffic flow fusion has better estimation results under traffic congestion according to the simulation results and further proposed a new fusion of traffic density method. Finally, the future directions of data fusion methods in driving time estimation are discussed