Cumulative impact of developments on the surrounding roadways’ traffic.
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2011-10-01
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Abstract:"In order to recommend a procedure for cumulative impact study, four different travel ; demand models were developed, calibrated, and validated. The base year for the models was 2005. ; Two study areas were used, and the models were run for three periods (AM peak, PM peak, and ; average daily traffic). The models were developed based on the two regional models of the Baltimore- ; Washington, D.C. area. The calibrated models were utilized to forecast traffic for the years 2010, ; 2020, and 2030. The 2010 forecast results were compared to the ground counts. In total, 72 different ; models were developed and run. It was concluded that the Sub-TAZ model forecasted traffic more ; realistically and this model was best suited for the cumulative impact study. It was recommended that ; the base regional model should be zoomed-in by the Sub-TAZ model for the study area, in order to ; conduct a cumulative impact study. The Sub-TAZ model can also simply be applied to the regional ; model. The researchers also investigated the feasibility of using TRANSIMS to develop an Activity- ; Based regional model. The research team developed and calibrated TRANSIMS Trip-Based (Track 1) ; and Activity-Based (Track 2) for one study area. The research team concluded that the regional ; Activity-Based model can be developed and calibrated in three steps, transitioning from a Four-Step ; model to Sub-TAZ, then to TRANSIMS Track 1, and finally to TRANSIMS Track 2."
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Main Document Checksum:urn:sha-512:e2255b2b8f1fad21d561fdc5a3db466031f8b08c878a9c86e44920adc15ca77712168951a283153d3e7e56a3013b95505fdc68a135627087a0f0579dc99e5657