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The paper discusses the collinear competition problem between urban rail transit and conventional bus transit. It compares ecological population competition with collinear transit competition, and utilizes ecological theories and means to solve the collinear competition problem between transit modes. A collinear competition model between rail transit and bus transit based on Lotka-Volterra population...
In order to ease the contradiction between steel slag transportation and the development of steel mills equipment technology of domestic, the SPC90 slag pot carrier has been designed and developed. The maximum rated load of SPC90 Slag pot Carrier is 90 ton, which can cooperate with many kinds of bridge machine for the railway passenger transport special line to complete the corresponding works, and...
Because of the constraint conditions of hub capacity and the large number of the hub combinations, the capacitated p-hub median problems are complicated. This paper presented a tree pruning algorithm to obtain the optimal solution in a local range. The algorithm was combined with Lagrangian relaxation method and applied to the air transportation system using data on passenger flows between the top...
Urban traffic supply capacity and feature is much related with traffic infrastructure investment structure which can affect the traffic jam. The paper discussed the relation of traffic investment with traffic demand. And sum up the feature of traffic investment, the coordination models of investment. At last, based on Beijing traffic development program2012, we designed the forecasting plan of public...
The principle of laser scanning ranging is applied in this paper. A reasonable algorithm is used to make laser sensor calibration. In this article, spatial coordinate system is established to analyze the measured data. Then we get the space coordinates of the scanning points and the data of pavement profile points in the laser scanning plane. Finally, the pavement roughness test result is obtained.
If a transit vehicle breaks down on a schedule trip, there are some vehicles in the system need to serve this trip and the former schedule must be changed. For solving the urgency vehicle routing problem with disruption that may be vehicle breakdowns or traffic accidents in the logistics distribution system, through the analysis of the problem and the disruption measurement, the mathematics model...
Bicycling is one of the most important modes of urban transportation in China. The objective of this study is to develop a procedure to identify the factors affecting travelers' choice of the park-and-ride trip mode. Two trip alternatives were considered, including the bicycling and the park-and-ride trip mode. In this study, a multinomial logit model structure was proposed and the use of the model...
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