Without considering the sampling interval , the applications of these models are not ripe.In this paper, the dynamic travel time collection techniques based on low-frequency FCD is put forward.

• 本文提出了基于低采样频率浮动车的行程车速/时间实时采集技术，该技术具有成本较低、精度较高的优势，这对我们这样的发展中国家具有重大的意义。