O valor do tempo na avaliação de projetos de transportes

AUTOR(ES)

Carlos Cardoso dos Santos

FONTE

IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia

DATA DE PUBLICAÇÃO

2012

RESUMO

The aim of this study is to analyse road congestion, especially considering structural aspects and the scenarios for the future. It emphasizes the possibility of using special tools for facing these problems which affect medium and biggest cities. Although traffic restrictions are major tools to face congestion, they have presented some problems when used in emerging countries. The study also consider the externalities caused by congestion, especially in terms of travel time spent on queues. The main methods for quantifying the travel time losses were identified in order to estimate the benefits coming from transport projects. Some Brazilian cases that estimate the value of travel time are analysed and the values obtained are compared in order to found relationships amongst them. The main factors affecting the value of time in each study are also considered. Finally, the impacts of the value of time on the appraisal of transport project are analysed based on five ways for calculating such impacts. Thus the value of time is obtained from the five different approaches. The results show a different of more than 69% between the smallest and the biggest value.

ASSUNTO(S)

congestion transporte : aspectos econômicos diseconomies transporte : planejamento value of travel time projects appraisal

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