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Impact of transportation demand management (TDM) elements on managed lanes toll prices.

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English


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  • Abstract:
    This research involved a simulation comparing three days of actual traffic data for the I-95 Express

    Lanes and General Purpose Lanes in Miami, Florida to a hypothetical scenario where all transportation

    demand management (TDM) activities and toll exemptions were eliminated. The purpose of the

    research was to quantify the extent to which carpooling, vanpooling, and transit usage contribute to

    better traffic flow in the I-95 corridor. The express lane analysis revealed a slight degradation in level of

    service (LOS) and a moderate increase in tolls in the southbound direction (+$0.41). It revealed a slight

    improvement in LOS and a slight decrease in tolls in the northbound direction (-$0.19). A phenomenon

    that occurred was that a large number of inherently low emission vehicles (ILEVs), which are toll

    exempt, opted out of the express lanes in the hypothetical scenario. The increase in express lane volume

    from former carpoolers, vanpoolers, and transit riders reverting to single occupant status was often

    offset by even larger volumes of ILEVs leaving the express lanes. Although the traffic impact to the

    express lanes was mild, the impact to the general purpose lanes was more severe. In the hypothetical

    scenario, the general purpose lanes operated at LOS F 22 percent more of time in the southbound

    direction and 8 percent more of the time in the northbound direction. Furthermore, the traffic densities

    in the general purpose lanes increased 100 percent of the time in the southbound direction and 94

    percent of the time in the northbound direction.

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    urn:sha256:456902d9b23b1bca972aacaafab940fc52eae27c2d5537ca2c6d54a58e678dfa
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    Filetype[PDF - 705.03 KB ]
File Language:
English
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