Trip Rates Adjustments for Impact Assessment and Congestion Management

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by Panos D. Prevedouros, Univ of Hawaii at Manoa, Honolulu, United States,

Document Type: Proceeding Paper

Part of: Pacific Rim TransTech Conference—Volume II: International Ties, Management Systems, Propulsion Technology, Strategic Highway Research Program

Abstract: Evidence that all urban trips are not equal and that trip rates need to be adjusted to reflect the differential contribution of trips to traffic loads and congestion is presented. Adjustments are necessary when different residential density areas (urban rings around the city core) exist in a metropolitan area. Rings of different density are quite common in cities with a population of 100,000 or higher. Trip rates may need to be adjusted with factors ranging from -21% to +27% to account for the differential effect of densities, depending on the source of trip rates (i.e., data from low or high density locations) and the place of application (i.e., residential or employment development in a low or high density area). The adjustment and models presented enhance the ability for correctly assessing traffic impacts and congestion, and provide aide to management decisions relevant to trip generation, impact assessment and congestion management.

Subject Headings: Traffic models | Travel patterns | Traffic congestion | Traffic surveys | Residential location | Travel modes |

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