## 4 The Interaction between Passenger Transport and Freight Transport  
The New Western Land-Sea Corridor is the main artery of freight transportation from western China to Southeast Asia and even the world, injecting new momentum into the formation of the new development pattern of domestic and international double circulation. The corridor promotes large circulation, gathers large industries, promotes emerging industrial chains, and strengthens inter-regional and international linkages. In the development of logistics transportation, passenger flow transportation cannot be ignored. The construction of channels not only accelerates the formation of the logistics network, but also further promotes the development of urban agglomeration. Therefore, the development of passenger flow and logistics is very important in the construction of the New Western Land-Sea Corridor.  
In recent years, China has made great efforts for the development of infrastructure; the rapid development of transport infrastructure can not only optimize the transportation structure and industrial structure, but also can have a significant impact on the logistics market, which can provide more development opportunities for logistics enterprises, accelerate the formation of a new pattern of market competition, and give full play to their technical and economic characteristics. Further, it can make full use of excess passenger transport capacity, reduce costs and resource investment, and expand new ways of logistics transportation. The integration of passenger transport into freight transport can play to its advantages in resources, management, and cost while goods transportation can effectively integrate passenger transport enterprises and break the professional and regional boundaries. The coordinated development of these two systems will be conducive to the construction and improvement of the comprehensive transport system.  
Figure 2: Research area of New Western Land-Sea Corridor.  
Logistics is the abbreviation of \"material flow\" or \"goods transportation\". Passenger transportation and goods transportation belong to the scope of logistics activities. The freight transportation promoting effect on passenger transportation can be divided into the following several aspects; first, the goods transport supply chain provides clients with comprehensive systemic services, reducing the circulation of passenger transport costs. Second, it can effectively promote the reasonable division of labor and coordinated development among regions to optimize the industrial structure. Third, it can improve the utilization rate of idle passenger transport resources. Fourth, it can share the operation risk of passenger transport companies, improving the enterprise's own ability to resist risk.  
The logistics transport and passenger transport promote each other and develop together. Therefore, the coordination between the two is particularly important in the integrated transportation system. If the passenger transport and freight transport are not coordinated, the comprehensive transport efficiency will be reduced, the transport cost will be higher, and the economic benefit of the channel cannot be maximized. If the passenger transport and freight transport are coordinated, comprehensive transport efficiency will be improved, transport costs will be reduced, and economic and efficient development of corridors will be promoted. To sum up, road passenger transport integrated into logistics can play to their resources, management, and cost advantages. The logistics transport can effectively integrate road passenger transport enterprises and break professional and regional boundaries. The coordinated development of the two will be conducive to the establishment and perfection of the comprehensive transportation system and strengthen the economic radiation capacity of the channel.