A Fuzzy Set Approach to Estimating Od Matrices in Congested Brazilian Traffic Networks (original) (raw)
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TRANSPORTES
O processo de definição da velocidade limite em rodovias envolve uma série de fatores, não claramente definidos em termos de uma ordem de relevância que possibilite o especialista – responsável por tomar decisão – optar pela melhor escolha. Como o estabelecimento de um limite de velocidade se caracteriza pela subjetividade, sendo um processo regido pela incerteza e pela imprecisão, a lógica fuzzy mostra-se como alternativa para a solução deste problema. Assim, especialistas da área foram questionados quanto à influência de fatores pré-determinados na velocidade limite de rodovias e, em seguida, foi aplicado um método fuzzy multicritério, otimizado por meio de um algoritmo genético, para que as variáveis fossem hierarquizadas em termos de pesos e, consequentemente, relevância. O método convergiu a resultados satisfatórios, possibilitando não somente a concepção de um sistema especialista para o estabelecimento de velocidades limites, mas também aplicações em outras áreas.
Applied Soft Computing, 2019
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Mathematical Formulation for Managing Traffic Congestion for a Sector of a Route using Fuzzy Logic
Traffic management has been a major problem in all the developing as well as developed countries. Governments have been spending hefty amounts to manage various aspects of traffic management using different methodologies. In this paper, a mathematical method is proposed to formulate congestion on a section of a main road having n number of possible alternate routes. This mathematical formulation would allow the decision makers to manage and give signals from far off control units. The article further tries to propose a possible solution involving the derived mathematical formulae and the concepts of fuzzy logic.