Rhode Island Commuter Rail Component

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EA Harper is working with VHB to add commuter rail and bus rapid transit components to the Rhode Island Statewide Model.  Work requires expansion of the auto vs. local bus mode choice model using TransCAD and GISDK, integration with results from STOPS for the larger Boston region, validation, and network development.

External Models – Roanoke, VA

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Making use of the AirSage mobile phone data,  Ms. Harper assisted WSP/Parsons Brinckerhoff to develop and validate the internal-external and the through trip tables for Roanoke Valley Transportation Planning Organization’s (RVTPO) new regional model.  A method for extracting trips relevant to the RVTPO region from the larger Virginia statewide AirSage data was developed, and EE/IEEI trips […]

Origin-User Equilibrium Testing – North Carolina Statewide Model

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A full assessment of the efficacy of implementing a Origin-User Equilibrium approach for the North Carolina Statewide Model (NCSTM) was undertaken by EA Harper Consulting under contract to WSP/Parsons Brinckerhoff.  Work included background research on the theory of OUE assignments, development of a testing methodology, execution and documentation of the tests, and recommendations for the most […]

New Starts Forecasting – Purple Line

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Ms. Harper managed the enhancements of the Metropolitan Washington Council of Governments (MWCOG) regional model, in support of Alternatives Analyses in two separate corridors in the Washington, D.C. region.  Corridors included the Corridor Cities Transitway (CCT) in Frederic and Montgomery Counties of Maryland, and the Purple Line (PL) in Montgomery and Prince George’s Counties, just north […]

New Starts Forecasting – Detroit, MI

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The Southeast Regional Council of Governments (SEMCOG) travel demand model was updated to incorporate a new mode choice model and an air passenger model.  Ms. Harper (assisting Parsons Brinckerhoff) modified TransCAD scripts to allow for forecasting travel on modes that did not exist in the previous model (commuter rail, light rail and bus rapid transit), incorporating […]