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  • Mobility and traffic research  (2)
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  • Mobility and traffic research  (2)
  • 1
    Online Resource
    Online Resource
    SAGE Publications ; 2013
    In:  Transportation Research Record: Journal of the Transportation Research Board Vol. 2361, No. 1 ( 2013-01), p. 1-10
    In: Transportation Research Record: Journal of the Transportation Research Board, SAGE Publications, Vol. 2361, No. 1 ( 2013-01), p. 1-10
    Abstract: Over the past decade, there has been a movement in North America toward a performance-based contract (PBC) model for maintaining and managing road networks. In traditional method-based contracts, the owner agency specifies techniques, materials, methods, and quantities, along with the time period for the contract. By contrast, in a PBC, the client agency specifies certain clearly defined minimum performance measures to be met or exceeded during the contract period. PBC is a type of contract in which payments are explicitly linked to the contractor's successfully meeting or exceeding certain clearly defined minimum performance indicators. Therefore, the selection of a PBC model for maintenance and rehabilitation differs significantly from that of a traditional asset management contract. Also, a PBC is more complex because of the pavement deterioration process and probability of failure to achieve the specified level of service for various performance measures along the contract period. A novel framework was developed for the selection of maintenance and rehabilitation activities with a model for pavement performance prediction and linear optimization. A case study based on data from the second generation pavement management system of the Ministry of Transportation Ontario is used to illustrate the framework.
    Type of Medium: Online Resource
    ISSN: 0361-1981 , 2169-4052
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2013
    detail.hit.zdb_id: 2403378-9
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  • 2
    Online Resource
    Online Resource
    SAGE Publications ; 1996
    In:  Transportation Research Record: Journal of the Transportation Research Board Vol. 1521, No. 1 ( 1996-01), p. 159-164
    In: Transportation Research Record: Journal of the Transportation Research Board, SAGE Publications, Vol. 1521, No. 1 ( 1996-01), p. 159-164
    Abstract: Computational fluid dynamics is used to analyze a transit subway station during fire emergency conditions. The analysis is based on solving the partial differential equations governing the transport of mass, momentum, and energy within the station geometry. A steady source of heat (e.g., fire) equivalent to 90 MBtu/hr is placed in the station. Steady state results for temperature distribution and air velocity field for three fire locations are presented. The results indicate that safe evacuation of patrons cannot be achieved without mechanical ventilation.
    Type of Medium: Online Resource
    ISSN: 0361-1981 , 2169-4052
    Language: English
    Publisher: SAGE Publications
    Publication Date: 1996
    detail.hit.zdb_id: 2403378-9
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
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