Browsing by Author "Munoz, Juan Carlos"

Now showing 1 - 4 of 4
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    BRRT adding an R for reliability
    (Policy Press, 2016) Delgado Breinbauer, Felipe Alberto; Giesen Encina, Ricardo; Munoz, Juan Carlos
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    Identifying transit driver preferences for work shift structures: An econometric analysis
    (INFORMS, 2008) Miranda, Felipe; Munoz, Juan Carlos; Ortuzar, Juan de Dios
    The combination of a strict labor legislation with daily and weekly time-dependent demand patterns has meant that transit companies tend to suffer significant inefficiencies; indeed, as more drivers than the minimum required are hired, providing services at off-peak periods, many tend to be inactive during these periods. To attack this problem, two strategies have been proposed. The first is using flexible shifts that may change daily according to a predefined contract. The other is using split shifts in which drivers' working hours are split in two to serve both the morning and afternoon peak periods. However, evidence of driver acceptance of these strategies is lacking.
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    On assigning drivers for a home-delivery system on a performance basis
    (2007) Genta, Sebastian; Munoz, Juan Carlos
    Consider a firm providing home-delivery of small parcels within a short period of time. The paper proposes a method to estimate the productivity of each driver on any fictitious route using linear regressions. The method separates the trip time in terms of the time spent: with customers, driving, and all other activities. Our tests show that productivity, measured in terms of number of customers visited per hour, vary across drivers. Even more, the same driver's productivity vary for peak and off-peak demand periods considerably. This methodology should enhance the reliability of the driver scheduling programs, since it reduces the error and bias of the productivity offered by the assigned set of drivers. It shall also improve the reliability of the delivery time promised to the customer.
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    Privatisation and deregulation of urban bus services: An analysis of fare evolution mechanisms
    (UNIV BATH, 2007) Fernandez, J. Enrique; Munoz, Juan Carlos
    Urban bus systems have been privatised and deregulated in Britain, Santiago (Chile) and Colombo (Sri Lanka). Although similar regulations were applied in these cases, the outcomes observed were significantly different. We create an analytical model to explain such outcomes considering differing compositions of the bus fleet (number of operators competing and their frequencies of service) and passengers' valuation of time. We conclude that perfect competition is not likely to emerge in the urban bus market. However, while in some cases this economic distortion scarcely affects the results, in others it does so significantly. Our model accurately predicts the outcomes observed.