Avaliação comparativa de tecnologia de transporte público urbano: ônibus x transporte público individualizado / A comparative assessment of transit technologies: bus x personal rapid transit (PRT)

AUTOR(ES)
DATA DE PUBLICAÇÃO

2007

RESUMO

This work discusses a methodology for the appraisal of new technologies of urban public transportation. The objective is to apply such a methodology to make possible a comparison of different technologies for public transportation. This work also considers the introduction of the personal rapid transit (PRT) in a brazilian medium-sized city as a potential candidate to replace the traditional bus technology. Although not yet a widespread alternative, PRT is a promising transportation technology, given its characteristics of individual transportation and, at the same time, the status of public service. The methodology consists in two steps: the first one uses the well-known technique named analytic hierarchy process (AHP), which has already been extensively used to assess transportation projects that involve different attributes and that cannot be easily compared with other techniques. The framework developed had the following phases: selection of criteria, identification of criteria weights, identification and comparison of the characteristics of each technology under comparison, and determination of the best alternative. Two groups of evaluators were considered in the analysis: experts and regular users of urban public transportation. The second phase is a direct comparison of the operational performance of the technologies under analysis. The analysis was done through the comparison of services times, maximum service capacity, and travel times per passenger and in the entire system. The final outcome of the evaluation has shown a slight advantage to PRT for both groups, what can suggest the need for changing the current view of urban public transportation. The second part of the evaluation has demonstrated that PRT could serve the demand of a medium-sized city with a higher level of service, although with capacity constraints in the case considered. The results suggest that PRT can be an interesting alternative to bus, if not limited by the very high investment costs.

ASSUNTO(S)

transportation project assessment avaliação de projetos em transportes prt urban public transportation transporte público urbano personal rapid transit prt transporte público individualizado ahp ahp

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