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Abstract: Many countries have already built or are in preparation for the construction of high-speed railway , and look at the high-speed railway lines have been built in the past , many of the high-speed railway lines are out of the loss , and high-speed rail gains and losses to a large extent depends on the whole lines of traffic, and the traffic you have a lot of impact factors , for example, population, distance , land form , and so on . To solve the above problem , this paper mainly studied Japan, France, China Taiwan high-speed railway traffic changes and their impact passenger population , geography and other objective factors . Start from these are more representative of the high - speed railway line , elaborated on the Tokaido Shinkansen , Japan , southeast of the French TGV line and China Taiwan 's high-speed rail along the city 's population , urban distribution , as well as the length of the line and high-speed railway traffic changes . Subsequently representative line 2008 operational data to establish the general gravity model , in theory, traffic and population and distance relationship : a positive correlation between population and traffic along the urban population is more intensive to high-speed rail line brings more traffic ; distance traffic is a negative correlation between traffic will decrease as the distance increases . And re- use of these data have been tested for the general gravity model , into the actual operation data to the gravity model , theorize traffic , compared with the traffic generated by the actual operation , if less than the theoretical traffic Description the traffic of the line did not reach the expected traffic , thereby affecting its for-profit ; than the theory of traffic on this line can produce enough traffic, but still to be studied for its profit . And most countries of the theoretical data with actual operating data have a certain gap , indicating that traffic not only with the gravity model used in the population and distance , but also by other factors , where the Homeland form a items worth considering .
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