Calibration of the Gravity Model for Truck Freight Flow Distribution PDF Download

Author: Shaohui Mao
Publisher:
ISBN:
Category : Freight and freightage
Languages : en
Pages : 70

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Author: Cambridge Systematics
Publisher: Transportation Research Board
ISBN: 0309099242
Category : Freight and freightage
Languages : en
Pages : 169

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Book Description
Federal planning legislation and regulations now mandate that state departments of transportation and metropolitan planning organizations consider the needs of freight when planning and programming transportation investments. While there are standard techniques used to forecast the movement of people, less attention has been paid to forecasting freight movements, and there are consequently fewer standardized techniques that state and local agencies can adapt to their local situation. This Toolkit is designed to provide transportation planners with the information they need to prepare forecasts of freight transportation by highlighting techniques successfully developed by state agencies across the country.

Author: Kathryn L. Peacock
Publisher:
ISBN:
Category : Business logistics
Languages : en
Pages : 40

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It is well known that better freight forecasting models and data are needed, but the literature does not clearly indicate which components of the modeling methodology are most in need of improvement, which is a critical need in an era of limited research budgets. This effort sought to identify those components using a logistics-driven approach as a starting point. The research began by examining other states' responses to freight planning legislation. A survey was sent to 47 states to determine the types of freight planning and freight modeling that occur and to understand the current data available and data needs. Research was conducted to gather information on how the supply chain functions and how logistics decisions regarding supply chain management are made. Sample supply chains were created for a variety of commodities, and mode choice was related to the behavioral aspects of the supply chain's logistics system. Once the mode was determined, the route assignment could be determined based on the accessible freight infrastructure. It was found that not all elements of the freight modeling methodology are equally weak: indeed, trip attraction components for the production of raw materials and the dissemination of these materials from the manufacturing plant, whether to the consumer (in a traditional push system) or to a just-in-time distribution center (in the newer pull system) are adequately developed in practice. However, it is critical that future research address the following needs, listed in order of descending priority: (1) the mode choice component for delineating travel by air, truck, rail, water, or a combination thereof; (2) trip attraction equations for intermodal facilities that are used when manufacturing plants outsource key components rather than creating all components in-house, and (3) trip attraction equations for representing the flow of goods from distribution centers to the consumer.

Author:
Publisher:
ISBN:
Category : Roads
Languages : en
Pages : 36

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Author: J. Richard Kuzmyak
Publisher: Transportation Research Board
ISBN: 0309098149
Category : Commercial vehicles
Languages : en
Pages : 141

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Author: Alan J. Horowitz
Publisher: Transportation Research Board
ISBN: 0309097657
Category : Traffic estimation
Languages : en
Pages : 125

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Book Description
TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 358: Statewide Travel Forecasting Models examines statewide travel forecasting models designed to address planning needs and provide forecasts for statewide transportation, including passenger vehicle and freight movements. The report explores the types and purposes of models being used, integration of state and urban models, data requirements, computer needs, resources (including time, funding, training, and staff), limitations, and overall benefits. The report includes five case studies, two that focus on passenger components, two on freight components, and one on both passenger and freight.

Author: Moshe E. Ben-Akiva
Publisher: Emerald Group Publishing
ISBN: 1781902852
Category : Transportation
Languages : en
Pages : 512

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This title addresses the need to develop new freight transport models and scientific tools to provide sound solutions that consider the wide range of internal and external impacts. The international contributions push forward frontiers in freight transport modelling and analysis.

Author:
Publisher: Transportation Research Board
ISBN: 0309214009
Category : Traffic estimation
Languages : en
Pages : 170

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Book Description
TRB’s National Cooperative Highway Research Program (NCHRP) Report 716: Travel Demand Forecasting: Parameters and Techniques provides guidelines on travel demand forecasting procedures and their application for helping to solve common transportation problems.

Author:
Publisher:
ISBN:
Category : Freight and freightage
Languages : en
Pages : 192

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Author:
Publisher:
ISBN:
Category : Urban transportation
Languages : en
Pages : 340

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Book Description