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Evaluating the role of private investment in infrastructure assets.

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English


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  • Abstract:
    Public Private Partnership (P3) projects are likely to fundamentally impact entire

    transportation systems. However, most studies are focused on system modeling rather than

    policy analysis, and few studies have examined the impacts of P3s on real-size

    transportation networks. Policy guidance for devising and administering P3 contracts to

    improve transportation system performance while maintaining profitability is lacking. Using

    the transportation network of Fresno, a middle-sized city in California as an example, this

    study considers alternative P3 approaches for profit maximization and system cost

    minimization at full urban transportation network scales. Based on system modeling results,

    we offer the following recommendations for policy makers to design and promote

    successful P3 projects in urban environments: (1) to promote a profitable and a socially

    beneficial system, toll rates should be set between profit-maximizing and system-optimal

    rates; (2) even though tolls (i.e., higher travel costs) on a few roads helps reduce travel

    demand they may, counter-intuitively, lead to higher total travel cost for the transportation

    system as a whole; (3) lower limit(s), in addition to upper limit(s), for tolls may be required

    to enforce system-optimal tolling and avoid undercutting; (4) a variable tolling scheme (i.e.,

    temporally and spatially varying tolls) significantly reduces congestion and increases profits

    relative to flat tolls; and (5) public officials should provide a comprehensive plan regarding

    past, current, and future P3 projects along with detailed system-wide impact analysis of

    project implementation in order to promote a more sustainable transportation system.

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    urn:sha256:de20e434a1c292254018c7147d66e7fb8e6db8ed96543e0847ba68d51f2fffe5
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    Filetype[PDF - 2.25 MB ]
File Language:
English
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