In order to implement and perform the User Equilibrium Information and parameters to the transportation planner, The purpose of this thesis is to show the necessary Vantagens e desvantagens do desempenho de cada pacote,īaseando-se num estudo de caso na cidade de Ciudad Juárez, Sendo utilizadas no pacote EMME/2, as funções volume-tempoĭe viagem: BPR e Cônicas. Implementar nos pacotes TransCAD e EMME/2 uma alocaçãoĭe tráfego em equilíbrio, visando o ótimo do usuário (UE).
The thesis concludes that varying the parameters for public transport in each software algorithm one can obtain similar results, which implies that it is most important to choose the best parameter values and not to choose the "best" software when simulating a traffic network.ĬOORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIORĪ presente dissertação pretende proporcionar ao planejadorĭe transportes parâmetros e informações necessárias para This results in that less transit lines will be attractive in Emme compared to Visum. Emme however, first focuses on the shortest travel time and then considers the total travel time for other lines with half the waiting time instead of the maximum wait time. For example Visum will first of all focus on the shortest total travel time and then consider the other lines with respect to the maximum waiting time. The parameters used are taken more or less into consideration in Emme and Visum. The algorithms are very similar in both software programs, since they include more or less parts of the optimal strategy. more passengers have an optimal strategy including a transit.
The Visum algorithm results in more total boardings, i.e. The results show that there are differences between the program algorithms but the significance varies depending on which output is being studied and the size of the network. The limited network of Nacka shows how the different software may produce different results in a larger public transport network. An example of a small and simple network (consisting of only a start and end node) has been used to demonstrate and show how the algorithms work and why volumes split differently on the existing transit lines in Emme and Visum. To find out why the differences occur the headway-based algorithms in each software were studied carefully. The OD-matrix was also limited and in order not to loose the correct flow of travellers portal zones was used to collect and retain volumes. The network of Nacka, and parts of Stockholm City, has been developed from an existing road network of Sweden and then restricted by "cutting out" the area of interest and then removing all public transportation lines outside the selected area.
The motivation for choosing this area and case is due to that it is interesting to see what differences could occur between the programs when there is a major change in the traffic network. The goal of this work is to answer the following objective: What are the differences with modelling a public transport network in Emme and in Visum, based on that the passengers only have information about the travel times and the line frequency, and why does the differences occur? In order to evaluate how the algorithms work in a larger network, Nacka municipality (in Stockholm) and the new metro route between Nacka Forum and Kungsträdgården have been used. The comparison will include the resulting volumes on transit lines, travel times, flow through specific nodes, number of boarding, auxiliary volumes and number of transits. It is of interest to study the differences between the two software algorithms and why they might occur because the Swedish Transport Administration uses Emme and the Traffic Administration in Stockholm uses Visum when planning public transport. this will not be done in this comparison. However, in order to make a complete software comparison the run-time, analysis capabilities, multi-modality, capacity to model various behavioural phenomena like crowding, fares etc. The aim of the thesis is to perform a comparison between the software Emme and Visum with respect to the assignment of public transport, in other words how passengers choose their routes on the existing public transport lines. The two most common software used for traffic simulation in Sweden today are Emme and Visum, developed by INRO respective PTV. When studying a large traffic network macroscopic traffic simulation can be used to model current and future traffic situations. Macroscopic traffic simulations are widely used in the world in order to provide assistance in the traffic infrastructure development as well as for the strategic traffic planning.