A Tool for Designing MnPASS Access Spacing
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A Tool for Designing MnPASS Access Spacing
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2018-03
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Minnesota Department of Transportation
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Report
Abstract
Dynamically priced High Occupancy Toll (HOT) lanes have been recently added to the traffic operations arsenal in an attempt to preserve infrastructure investment in the future by maintaining a control on demand. This study focuses on the operational and design features of HOT lanes. HOT lanes’ mobility and safety are contingent on the design of zones (“gates”) that drivers use to merge in or out of the facility. Existing methodologies for the design of access zones are limited to engineering judgment or studies that take into consideration undersized amount of observations. This project capitalized on the results of an earlier project that performed an assessment of safety and mobility on the HOT facilities in Minnesota highlighted the issues involved in either designs. The product of this project, the MnPASS Access Design application, provides a tool for traffic managers and planners to examine the conditions within an existing or prospective corridor and the distribution of shockwave lengths which are expected. From the distribution of shockwave lengths, decisions can be made regarding access restriction on the HOT lane to ensure that drivers do not attempt to make lane changes at locations prone to dangerous conditions. This tool provides support for the managers and planners by aggregating the entire behavior of the HOT lane within the corridor into a framework for simplified consideration.
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Zitzow, Stephen; Parikh, Gordon; Hourdos, John. (2018). A Tool for Designing MnPASS Access Spacing. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/197460.
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