Vehicle Classification Sampling Methodology Evaluation PDF Download
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Author: Wisconsin. Department of Transportation. Division of Planning & Budget
Publisher:
ISBN:
Category : Traffic surveys
Languages : en
Pages : 52
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Book Description
Author: Wisconsin. Department of Transportation. Division of Planning & Budget
Publisher:
ISBN:
Category : Traffic surveys
Languages : en
Pages : 52
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Book Description
Author: United States. Department of Transportation
Publisher:
ISBN:
Category :
Languages : en
Pages : 754
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 68
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Author: R. F. Benekohal
Publisher:
ISBN:
Category : Traffic estimation
Languages : en
Pages : 208
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Book Description
Nationwide surveys of departments of transportation, metropolitan planning organizations, and classification vendors/producers were conducted to determine the state of practice on equipment and methodologies used to determine truck vehicle miles traveled (VMT). The current Illinois Department of Transportation (IDOT) methodology was evaluated and it was found that it overestimated truck VMT for multi-unit trucks on all eight functional classes except on the minor urban arterials. The average overestimation was 11.5% and it varied from -10% to +44%. The current method overestimated truck VMT for single-unit trucks in five and underestimated in three functional classes. The under/over estimation ranged from -6% to +35%, but the average value was close to zero. To calculate truck VMT more accurately, this study proposed two different methods based on average truck percentage (ATP) and average section length (ASL). In the ATP method, truck VMT is calculated by multiplying the ATP for a group of roadway sections by the total VMT of that group. The ATP method should be used when the ATP and the total VMT by volume groups are available. In the ASL method, the total truck volume for the sampled sections is multiplied by the ASL. The ASL method should be used when the information required for ATP is not available or not reliable. Sample size influences the accuracy of truck VMT estimation and the decision on sample size must consider the error level that is acceptable. This study looked at the likely error for different sample sizes and recommended using 8% to 16% of the number of roadway sections. The sections should be distributed among the volume groups. Recently, IDOT collects vehicle classification data for three categories at about 10,000 sections, biennially. It is recommended to evaluate the truck VMT calculation using recent data.
Author:
Publisher:
ISBN:
Category : Automobiles
Languages : en
Pages : 128
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Book Description
Author: Beyerer, Jürgen
Publisher: KIT Scientific Publishing
ISBN: 3731511711
Category : Computers
Languages : en
Pages : 242
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Book Description
2021, the annual joint workshop of the Fraunhofer IOSB and KIT IES was hosted at the IOSB in Karlsruhe. For a week from the 2nd to the 6th July the doctoral students extensive reports on the status of their research. The results and ideas presented at the workshop are collected in this book in the form of detailed technical reports.
Author:
Publisher:
ISBN:
Category : Air
Languages : en
Pages : 64
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Author:
Publisher:
ISBN:
Category : Delegated legislation
Languages : en
Pages : 916
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Author: Yuning Cheng
Publisher: Springer Nature
ISBN: 9819920469
Category : Architecture
Languages : en
Pages : 457
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Book Description
Closely related to the frontier research field of “digital technology”, this book reshapes the planning and design process of landscape architecture from theoretical and practical levels. It gives a full-scale discussion to the logic, structure, method, and application of digital landscape architecture, leading this field to a new era of perception-quantification research mode. Readers will get a comprehensive understanding of digital landscape architecture, know about multiple digital methods for landscape planning and design, and learn a lot of practical projects with digital technology. And it will inspire the readers to think about new patterns and approaches to landscape planning, rather than traditional ways. This book is organized under a clear logic, which helps the readers easily get the core of the work. A lot of logic diagrams showing between the theoretical paragraphs highly summarize the key points of the book, providing a better readability and acceptability. This book also contains many detailed drawings and graphics for the project cases, which gives a good demonstration of how digital methods could be applied in practice.
Author: United States. National Highway Traffic Safety Administration
Publisher:
ISBN:
Category : Automobiles
Languages : en
Pages : 344
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Book Description
