Intercity travel is closely related to regional economic and industrial activities. In order to better promote the development of the Pearl River Delta urban agglomeration, it is essential to accurately grasp the travel characteristics of intercity travel in the Pearl River Delta. This paper studies the spatial-temporal characteristics of residents' travel in the Pearl River Delta Urban Agglomeration based on the car-hailing data on National Day. The research period is defined and the research area is divided into grids at first. The paper analyzes the temporal characteristics of urban agglomeration travel, studies the peak period of residents travel during the holiday, and uses the correlation coefficient to analyze the correlation between the number of departures and arrivals. Then, this paper analyzes the spatial characteristics of urban agglomeration travel. GDBSCAN algorithm solves the problem of low efficiency caused by the large amount of travel data in the analysis of the spatial characteristics. The results show that intercity traveler's vacation is longer than National Day and there is an obvious round-trip phenomenon. The core regions show a strong connection in the boundary of administrative division, which shows a good trend of regional development in urban agglomeration.

CICTP