Verifying The Accuracy Of Regional Models Used In Transportation And Air Quality Planning
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Verifying The Accuracy Of Regional Models Used In Transportation And Air Quality Planning
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Author : Caroline Rodier
language : en
Publisher:
Release Date : 2003
Verifying The Accuracy Of Regional Models Used In Transportation And Air Quality Planning written by Caroline Rodier and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with Air quality management categories.
Transport Models In Urban Planning Practices
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Author : Marco te Brömmelstroet
language : en
Publisher: Routledge
Release Date : 2016-04-08
Transport Models In Urban Planning Practices written by Marco te Brömmelstroet and has been published by Routledge this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-04-08 with Architecture categories.
This book explores how transportation models can play a role in a changing transport planning and policy making context. Most models are rooted in decades of development work and are geared to offer value-free, academic and explicit knowledge to transport planning experts. However, planning practice has changed dramatically over the years, resulting in a less technical rational view on the use of such knowledge – especially so in early, strategy making phases. More and more complex policy goals, integration of a wide area of other policy domains, a wider, ever-changing and much more mixed group of planning participants and much more focus on ‘wicked problems’. The book maps how this influences the effectiveness of transport modelling exercises and explores several state-of-the-art implementations. This book was published as a special issue of Transport Reviews.
Metropolitan Travel Forecasting
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Author : Transportation Research Board
language : en
Publisher: National Academies Press
Release Date : 2007-10-18
Metropolitan Travel Forecasting written by Transportation Research Board and has been published by National Academies Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-10-18 with Transportation categories.
TRB Special Report 288, Metropolitan Travel Forecasting: Current Practice and Future Direction, examines metropolitan travel forecasting models that provide public officials with information to inform decisions on major transportation system investments and policies. The report explores what improvements may be needed to the models and how federal, state, and local agencies can achieve them. According to the committee that produced the report, travel forecasting models in current use are not adequate for many of today's necessary planning and regulatory uses.
Beyond Uncertainty
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Author : Caroline Rodier
language : en
Publisher:
Release Date : 2007
Beyond Uncertainty written by Caroline Rodier and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with Air quality management categories.
Concerned citizens across the United States are increasingly asking officials about the effects of proposed new highways and their alternatives, such as transit and road pricing, on how their communities will grow, the air their children will breathe, and the amount of time they will have to spend in traffic commuting to work. It is widely acknowledged, however, that the models used to assess these effects have limited accuracy and sensitivity to alternatives to highway expansion. This study attempts to move beyond the issues of uncertainty in models used to forecast the travel, land use, and air quality effects of transportation projects and policies by (1) reviewing the literature on error and uncertainty in travel and land use models to understand key sources, likely confidence bounds, and potential biases; (2) conducting interviews with modeling experts to gain insight into how uncertain models may be improved and better applied in transportation studies; and (3) presenting a series of cases studies that illustrate innovative and, possibly, more credible approaches to modeling given different study objectives, model capability, and knowledge of model uncertainty.
Travel Demand And Land Use 2004
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Author : National Research Council (U.S.). Transportation Research Board
language : en
Publisher:
Release Date : 2004
Travel Demand And Land Use 2004 written by National Research Council (U.S.). Transportation Research Board and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with Choice of transportation categories.
Reliability Risk And Safety Three Volume Set
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Author : Radim Bris
language : en
Publisher: CRC Press
Release Date : 2009-08-20
Reliability Risk And Safety Three Volume Set written by Radim Bris and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009-08-20 with Technology & Engineering categories.
Containing papers presented at the 18th European Safety and Reliability Conference (Esrel 2009) in Prague, Czech Republic, September 2009, Reliability, Risk and Safety Theory and Applications will be of interest for academics and professionals working in a wide range of industrial and governmental sectors, including Aeronautics and Aerospace, Aut
Department Of Housing And Urban Development Independent Agencies Appropriations For 1980
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Author : United States. Congress. House. Committee on Appropriations. Subcommittee on HUD-Independent Agencies
language : en
Publisher:
Release Date : 1979
Department Of Housing And Urban Development Independent Agencies Appropriations For 1980 written by United States. Congress. House. Committee on Appropriations. Subcommittee on HUD-Independent Agencies and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1979 with United States categories.
Energy And Environmental Concerns 2005
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Author : National Research Council (U.S.). Transportation Research Board
language : en
Publisher:
Release Date : 2005
Energy And Environmental Concerns 2005 written by National Research Council (U.S.). Transportation Research Board and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with Automobiles categories.
Ensuring a coordinated response to highway crashes and other incidents is vital to protecting public safety, keeping traffic moving, and reducing environmental impacts. The TRB National Cooperative Highway Research Program's NCHRP Research Report 981: Guidelines for Quantifying Benefits of Traffic Incident Management Strategies aims to offer guidance on Traffic Incident Management (TIM) programs, which can vary widely and may have different goals, guidelines, and methods applicable under a variety of data scenarios. Supplemental to the report is NCHRP Web-Only Document 301: Development of Guidelines on Quantifying Benefits of Traffic Incident Management Strategies, an Implementation Plan, and a Summary Presentation.
Improving Socioeconomic Land Use Forecasting For Medium Sized Metropolitan Organizations In Virginia
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Author : Danielle Renée McCray
language : en
Publisher:
Release Date : 2008
Improving Socioeconomic Land Use Forecasting For Medium Sized Metropolitan Organizations In Virginia written by Danielle Renée McCray and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with Economics categories.
Socioeconomic forecasts are the foundation for long range travel demand modeling, projecting variables such as population, households, employment, and vehicle ownership. In Virginia, metropolitan planning organizations (MPOs) develop socioeconomic forecasts for a given horizon year at a traffic analysis zone level., and the Virginia Department of Transportation (VDOT) uses these forecasts as input to the four-step travel demand model system. This report identifies the socioeconomic forecasting practices currently used by four medium-sized Virginia MPOs, computes the accuracy of socioeconomic forecasts generated by one such MPO, and recommends practices for improving such forecasts. This research found that medium-sized Virginia MPOs are using similar techniques to forecast socioeconomic variables. These techniques are to (1) identify jurisdictional population control totals based on U.S. Census and Virginia Employment Commission data; (2) disaggregate population projections to the zonal level based on comprehensive plans, local knowledge, and historic trends; (3) apply historic ratios of households to population and autos to population to forecast households and autos; (4) use historic trends and local expertise to determine future employment; and (5) revise zone projections through coordination with local jurisdictions. Using a forecast that was developed for the Lynchburg region in 1981 with a horizon year of 2000, the study area percent error was computed as the difference between the forecasted and observed values for the entire study area. While the study area percent error for number of vehicles and employment was less than 10%, the study area percent errors for population and households were 48% and 14%, respectively. Two adjacent zones accounted for approximately 80% of the population error and 90% of the household error, and the error resulted because anticipated development therein did not materialize. The zone percent error is the average difference between forecasted and observed values for each zone. Population, households, and vehicles had similar zone percent errors of 61%, 65%, and 54% respectively, while the employment zone percent error was 154%. Four recommendations for improving forecasts are given. First, localities should provide updates to MPO or PDC staff as changes in land development occur, and such staff should perform socioeconomic forecasts more frequently than the current practice of every five years. . Second, MPOs should consider providing two sets of socioeconomic variables for the travel demand model: (1) the baseline forecast (which is the MPO's best estimate) and (2) the baseline forecast modified by some percentage that accounts for the possibility of forecast error. Third, best forecasting practices should be shared among MPOs through a user's group, a workshop, or some other forum where MPO and PDC staff will be in attendance. Fourth, VDOT should communicate these recommendations to MPO staff who are responsible for completing socioeconomic forecasts.
Statistical Evaluation Of Projected Traffic Growth
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Author : Feng Liu
language : en
Publisher:
Release Date : 2004
Statistical Evaluation Of Projected Traffic Growth written by Feng Liu and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with Traffic estimation categories.