Assessing sustainable freight policies.
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2014-05-01
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Abstract:The main aim of the study was to examine transportation demand management strategies related to long haul freight. It investigates freight ; movements and truck vehicle miles traveled (TVMT) changes in response to certain transportation policies, including a national-level and two local ; policies. In the first scenario, the effects of Panama Canal expansion project and expected shifting of demands between ports on truck volumes of the ; interstate highway system are studied. This essentially results in a new freight origin and destination matrix that was consequently assigned to the ; highway network. Such a network analysis reveals the changes in the entire truck network and the congested areas, as well as the total Truck Mileage ; Traveled. In addition, establishing truck consolidation centers scenario was considered in that shipments that are less than truck load are banned from ; entering a specific region. The results show that such policies can potentially reduce the total Truck Mileage Traveled, and therefore generating less ; emission. The last policy prescription was to implement a truck curfew policy in Chicago region. The study examines the effects of such policies and ; presents sensitivity analysis with respect to each scenario. ; Furthermore, the study presents an efficient method for disaggregating Freight Analysis Framework (FAF) data. FAF provides estimates of tonnages ; and values for different types of commodities between states and major metropolitan areas. This database establishes a good resource for analyzing the ; movements and behavior of freight in the U.S. However FAF data is aggregated and transportation planners and decision makers need to disaggregate ; the data to obtain more detailed picture of freight movements in the U.S. The study successfully disaggregates FAF data into county level.
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Main Document Checksum:urn:sha256:1b35ef40a618c9fcd75ace1e496551984b575fa68fa866c228cb0ec7e72fc7b8