The traffic heterogenous characteristics are difficult to be captured in analytical forms.However, macroscopic models are easier to be applied in traffic analysis than microscopic models.

• 为解决车辆大小不一的问题，与机车渗透的现象，本研究以车辆佔有面积来分析车流，并透过跟车模式来建立模型，透过影像实录的方法蒐集路段交通流资料，并藉此验证密度与速度的关系。