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Valor de tempo de viagem e idiossincrasia dos usuários do transporte regular e clandestino no Ceará: um estudo empírico via estimativa bayesiana

Value of travel time and users idiosyncrasy of regular and irregular transport in Ceará: an empirical study by bayesian estimation

Resumos

Neste trabalho foi estudado o valor de tempo de viagem para transporte clandestino e regular. A base teórica é a do modelo de alocação de tempo de Becker (1965) se estendendo para a estrutura empírica proposta por Tuong e Hensher (1985a), tentando incorporar a idiossincrasias dos indivíduos no processo de estimação por uma abordagem empírica com fatores aleatórios tal como proposto por Train (1998) e Revelt e Train (1999). Os resultados indicam que a forma estrutural de Tuong e Hensher não é a mais adequada para o estudo, mas sim as propostas estruturadas de Becker (1965), DeSerpa (1971) ou a não estruturada tipo McFadden. Conclui-se, simulando uma redução em tempo de viagens do transporte regular de um minuto e utilizando o valor de tempo de viagem obtido no modelo a la McFadden que pode haver uma redução na demanda do clandestino e um retorno para a sociedade cearense da ordem de 167 mil reais.

valor de tempo de viagem; logit com parâmetros aleatórios; estimativa bayesiana; transporte de passageiros


We study in this paper the travel time value for clandestine and regular transport. The theoretical basis is the time allocation model from Becker (1965) extending to the empirical framework proposed by Tuong and Hensher (1985a), incorporating the individuals idiosyncrasies in the estimation by an empirical approach to random parameters such as proposed by Train (1998) and Revelt and Train (1999). In despite of the structured model like Becker (1965) and DeSerpa (1971) or unstructured model like McFadden has been a applicable result the structural functional form of Tuong and Hensher is not applicable for the study. Simulating a reduction in one minute the travel time of the regular transport and using the travel time value from McFadden model we conclude that there may be a reduction in clandestine demand transport and a monetary return to Ceará society on the order of a hundred thousand dollars.

value of travel time; random parameters logit; bayesian estimation; passengers transport


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Datas de Publicação

  • Publicação nesta coleção
    03 Out 2014
  • Data do Fascículo
    Mar 2012

Histórico

  • Recebido
    22 Ago 2011
  • Aceito
    26 Jan 2012
  • Revisado
    12 Dez 2011
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