A Comparative Study on Characteristics of Intercity Highway Travel Network in Urban Agglomeration Based on Mobile Signaling Datum

As the carrier, the intercity traffic play an important role in of the flow and exchange of urban agglomeration elements. The main factors affecting the intercity highway travel of urban agglomeration in China and its change trend are analyzes in this paper; Based on the mobile signaling datum, the intercity and external traffic volume of the four urban agglomerations of the Beijing- Tianjin-Hebei, the Yangtze River Delta, the Great Bay Area of Guangdong, Hong Kong, Macao and the Chengdu-Chongqing urban agglomeration are calculated, and the characteristics of intercity highway traffic travel scale, connection intensity and spatial agglomeration of the urban agglomerations are compared. The results show that the urban agglomeration has close economic ties, frequent personnel mobility, and large scale and intensity of intercity highway travel; The traffic volume of intercity highway decreases obviously with distance; The primacy of the core cities of the Beijing-Tianjin-Hebei and the Chengdu-Chongqing urban agglomeration is more obvious; The Yangtze River Delta, the Great Bay area intercity highway travel network is more balanced, showing a multi center pattern.