Comprehensive Transportation Corridor Research Articles

Research on the Coordination Model of Passenger Transportation Mode in the Intercity Comprehensive Transportation Corridor

At present, the study of comprehensive transportation corridors primarily focuses on the planning and construction of transportation corridors. There are few studies on the coordinated operation of all modes of transportation after the construction of the transportation corridor is completed. Comprehensive transportation corridor takes on the characteristics that the volume of transport demand and supply is large, the number of transportation modes is not only one, and competition among different transportation modes is fierce. In order to prevent unhealthy competition among different transportation modes from disrupting the transportation market, this paper takes the passenger transportation modes within the intercity comprehensive transportation corridor as the studied object and establishes a coordination model for them. The model introduces the disaggregate model as the research theory, takes the quantizable attributes of transportation modes as the decision variables, takes the reasonable distribution of passenger flow among different transportation modes as the objective function, and takes the supply capacity of different transportation modes and the reasonable value range of decision variables as the constraints. This model is a multiobjective nonlinear programming problem. The multiobjective genetic algorithm is designed to solve the model. The real number encoding method is adopted to encode the decision variables; the penalty function method is used to eliminate the solutions that do not meet the nonlinear constraints after crossover and mutation; the repairment algorithm is used to convert the solutions that do not satisfy the linear constraints and bound constraints after crossover and mutation into the feasible region. Pareto optimal solution set is obtained through continuous selection, crossover, and mutation. Finally, a numeric example is made to demonstrate that the method proposed in this paper is effective and feasible.

Optimization of Passenger Transportation Corridor Mode Supply Structure in Regional Comprehensive Transport Considering Economic Equilibrium

Reasonable transportation network layoutsarecritical for optimizing a comprehensive transport system. With the gradual development of a transportation industry from quantitative expansion to structural optimization, and transformation of various transportation modes from independent operation to integrated development, traditional comprehensive transport planning theories and methods have not adapted. In thispaper, a new planning concept is proposed from the perspective of economic equilibrium with theaim ofoptimizing a supply structure for a comprehensive transport passenger transportation corridor. An in-depth analysis was conducted of the internal mechanism of the dynamic equilibrium between supply and demand of this corridor,wherein the maximum of the globaltransportation demand subjectcustomer surplus wastaken as a target function, respective interest functions of a demand subject and a supply subject served as constraints to quantitatively optimize the supply structure of the passenger transportation corridor in comprehensive transport, and a Gradient Descent algorithmwasdesigned. The results show that the proposed model better reflectstheeconomic operation mechanism of a passenger transportation market in a comprehensive transport corridor (CTC), and prove that the supply structure of CTC is closely related to passenger flow, travel value distribution, a supply subject's scale rate of return,and travel time. These research results have important academic values in terms of improving passenger transportation corridor structure optimization in region-specific comprehensive transport that conforms to a market economy mechanism. This concept can be extended from single corridor planning to point-to-point and door-to-door transportation supply structure planning, andto comprehensive transport network planning and urban transportation planning without loss of generality.

Structure Optimization Model of Comprehensive Transport Corridor Based on Resource Constraints

From the manager and the traveler’s point of view, a bi-level programming model of structure optimization considering multi factors is proposed for comprehensive transportation corridor with parallel structure. In the higher level model, land resource consumption, upper model energy consumption and environmental emissions as indicators are selected as indexes to minimize the social resource cost. In the lower level model, the Mode-Path User Equilibrium model is selected for traffic distribution. To minimize the total travel cost of travelers, the supply and demand balance coefficient is selected as the channel response function and a model solution algorithm is designed based on genetic algorithm. At last, the proposed model is applied to Zhejiang Province Hangzhou Ningbo transportation corridor. The channel traffic demand is calculated for the planning year and the reasonable channel structure optimization program is given, which proves that the model is scientific and effective.

The Research on Coordination for Regional Comprehensive Transportation Corridor Based on Multi-objective Genetic Algorithm

At present, the studies of regional integrated transport corridor mainly focus on the planning and construction of transport corridor. Fewer studies investigate harmonious operations among different modes of transport after the completion of transport corridor construction. Regional comprehensive corridor takes on the characteristics of heavy transport demand, supply and travel modes. Meanwhile, competition is severe among different travel modes. In order to avoid vicious competition among different travel modes that negatively impact the transportation market, multi-objective and nonlinear programming model is established with the purpose to maximize the unity of traveler. The objective of this model is to realize mutual adaptation between transport demand volume and supply volume. Tournament selection is applied to weeding out the inferior solution with the concept of non-inferior solutions. The solution that does not meet the nonlinear constraints is obsoleted in the selection process by using the penalty function. Solutions that do not meet the linear and boundary constraints after crossover and mutation process are transferred to feasible solution space via repair algorithm. Pareto optimal solution set is obtained through continuous selection, crossover and mutation. At last, a numeric example demonstrates validity and feasibility of the model.

Multi-mode Choice Behavior for Passenger in Comprehensive Transportation Corridor

In term of the long-distance and low-frequency travel in comprehensive transportation corridor, choice behavior for traveler in comprehensive transportation corridor will be researched using disaggregate model. The following research conclusion can be drawn up. Firstly, there are significant differences of passenger transport demand structure in different periods. The departure time has great influence on passengers travel choice for middle-long-distance travel, while the departure time has few effects on choice behavior for short-distance passengers. Secondly, railways has an apparent advantage in the middle-long-distance, and the advantage distance of high speed railway is about 500-1000km, express train is about 1000-2200km, and air service advantages is over 2200km. Secondly, Income, fares and travel distance is still the main factors influencing choice behavior of passengers in comprehensive transportation corridor. Market shares about different mode can be effectively optimized by adjusting the ticket fare. This research content can provide theoretical basis for rational design and scientific plan of passenger transport infrastructure in comprehensive transportation corridor.

Research on Integration of Connection and Layout about Comprehensive Transport Hub and Corridor within Municipal Area

Based on the concept of “integrated transportation”, this paper utilizes the collaborative theory, complex system theory and transport economics theory to analyze the matching relationship between the transportation hub and corridor from a macro perspective. Meanwhile, it also explores the coordination of their transport capability, transport organization, etc., from the microscopic point of view, ultimately achieving the theoretical integration and harmonization of the connection and layout of the integrated transport hub and corridor.

Prediction Model of Transport Sharing Rates of the Comprehensive Transportation Corridor

Aiming at the problem that the prediction of transport structure doesn’t have enough accuracy, in this paper the influence factors of transport structure were determined, and the transport structure of the future characteristics year was predicted. The results show that: In this model, the average error of the freighter model and the passenger model is less than 2%; In the Logit model, the average error of the freighter model and the passenger model is more than 5%. So the error of the predictive method is smaller than that of the Logit model.