Download or read book The Development of an AVI WIM Data Base and the Demonstration of a Combination of Bridge WIM and Portable AVI Data written by Thomas Lee McDaniel and published by . This book was released on 1985 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Research for Tomorrow s Transport Requirements written by and published by . This book was released on 1986 with total page 950 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Monthly Checklist of State Publications written by Library of Congress. Exchange and Gift Division and published by . This book was released on 1986 with total page 648 pages. Available in PDF, EPUB and Kindle. Book excerpt: June and Dec. issues contain listings of periodicals.

Download or read book Monthly Checklist written by and published by . This book was released on 1986 with total page 868 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The State Planned Economy written by Dale E. Casper and published by . This book was released on 1986 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Public Administration Series Bibliography written by and published by . This book was released on 1986 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Private sector Involvement and Toll Road Financing in the Provision of Highways written by National Research Council (U.S.). Transportation Research Board and published by Transportation Research Board National Research. This book was released on 1987 with total page 618 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Feasibility of a National Heavy vehicle Monitoring System written by Lance R. Grenzeback and published by Transportation Research Board National Research. This book was released on 1988 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Report written by and published by . This book was released on 1964 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Development and Application of an Avi System Specification written by and published by . This book was released on 1990 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper describes the development of an open, generic automatic vehicle identification (AVI) specification by Castle Rock Consultants (CRC), on behalf of the Heavy Electronic License Plate (HELP) program. HELP is a $10.5 million program aimed at developing a heavy vehicle monitoring and management system combining AVI, weigh-in-motion and automatic vehicle classification technologies with a networked data communications and processing system. The HELP AVI research effort started in 1986 and has recently been completed. The three principal phases of work that madeup the HELP AVI research program are described in the paper. The first of these involved testing several commercial AVI systems in laboratory, test-track and field environments. Data from this phase were then used as the basis for the development of a draft generic specification in Phase 2. A radio frequency technology was selected for the draft specification, since this demonstrated the greatest potential for meeting HELP's needs. The third phase of work involved testing prototype equipment manufactured to the draft specification. The paper discusses work carried out in commissioning and evaluating the prototype AVI equipment in this phase. In addition, the paper describes the definitive HELP AVI specification produced as a result of this final series of tests. This includes discussion of some of the specification's advanced features such as high data rates, two-way communications and in-pavement antennas. The paper goes on to describe some forthcoming applications of the HELP AVI system. The first of these is the Crescent Demonstration Project, which will involve the installation of the fully developed HELP system in six U.S. states and one Canadian province. The HELP AVI specification also forms the basis of the Fastoll automated toll collection system, soon to be installed on the Dulles Toll Road in Northern Virginia. For the covering abstract of the Conference see IRRD Abstract No. 807661.

Download or read book National Traffic Data Acquisition Conference written by and published by . This book was released on 1992 with total page 694 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Wim Sensors Accuracy Guidelines for Equipment Selection and Calibration and Traffic Loading Data Applications written by Muhammad Munum Masud and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Weigh-in-Motion (WIM) technology is one of the primary tools used for pavement management. It can provide essential and accurate truck traffic information, including vehicle class and speed, vehicle count, gross vehicle weight (GVW), single axle (SA) and tandem axle (TA) weights, axle spacing, and the date and time of the event. The State Departments of Transportation (DOTs) gather WIM data for various applications, including highway planning, pavement and bridge design, commercial vehicle weight enforcement, asset management, and freight planning and logistics. Overloaded trucks pose severe challenges to road transport operations. Overloaded trucks can cause more damage to the pavement systems than trucks loaded within legal weight limits. Truck overloading can also lead to severe consequences if involved in a traffic accident. Law enforcement agencies divert potentially overloaded trucks to static scales and issue tickets based on the information collected at a WIM station. Because of the wide range of applications, the data obtained at WIM stations must be accurate, consistent, and reflect actual field conditions.This study addressed four critical concerns related to WIM equipment performance, calibration needs, traffic loading data quality, and applications. Precisely, the current research advanced the state of the practice knowledge about (a) potential factors impacting WIM system accuracy, (b) accuracy and consistency of traffic loading data and calibration needs of WIM stations, (c) revised/modified guidelines for WIM equipment calibration, and (d) estimation of commercial freight tonnage from Gross Vehicle Weight (GVW) data. The research objectives were accomplished by synthesizing and analyzing the WIM performance and traffic loading data available in the Long Term Pavement Performance (LTPP) traffic database and data available through other state DOTs. The WIM sites analyzed in this study are from 30 states within the United States and 3 Canadian provinces. Several factors can affect the WIM system accuracy (i.e., measurement error). The potential site-related factors include road geometry, pavement stiffness, surface distresses, roughness, and climate. Decision tree models were developed in this study to illustrate a potential for estimating the expected WIM measurement error range using information about the WIM site and sensor-related factors. The results show that the sensor array and sensor types are the most important predictors, followed by WIM controller functionality (speed points). The data analysis and results also show that the climate can be important for some sensor types. One can integrate this information with equipment installation and life cycle costs to determine the most reliable and economical WIM equipment while also considering accuracy requirements by WIM data users.One way to evaluate WIM measurement errors is by using the data collected immediately before and after equipment calibration. The limitation of this approach is that the data represent a snapshot in time and may not represent a long-term WIM site performance. Consequently, an alternative approach was needed to characterize temporal variations in WIM data consistency. This study presents a method to estimate WIM system accuracy based on axle load spectra attributes [Normalized Axle Load Spectra (NALS) shape factors]. This analysis's main objective is to determine WIM system errors based on axle loading without physically performing equipment calibration. Using NALS to estimate WIM system accuracy can save a significant amount of time and resources, usually spent on equipment calibrations yearly.Successful WIM equipment calibration can eliminate systematic weight, speed, and axle spacing errors. The suggested changes in current WIM calibration procedures related to truck type (loaded truck), number of truck runs, and truck speed (multiple speed points) can significantly reduce the time and resources needed for successful equipment calibration. Accurate freight tonnage estimates and trends are essential due to their implications on economic, infrastructure development, and transportation policy decision-making. This study presents a practical application of WIM data to estimate freight tonnage and classify commodity types. The payloads computed for Class 9 trucks from GVW data strongly correlated with the average freight tonnage obtained from a commercial data source, i.e., Transearch from the IHS market. The user can independently verify the freight estimates from surveys at locations close to WIM sites.

Download or read book Highways and Transportation written by and published by . This book was released on 1995 with total page 562 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book High Speed Weigh in motion System Calibration Practices written by A. T. Papagiannakis and published by Transportation Research Board. This book was released on 2008 with total page 413 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book AASHTO Guidelines for Traffic Data Programs written by American Association of State Highway and Transportation Officials. Joint Task Force on Traffic Monitoring Standards and published by American Association of State Highway & Transportation Officials. This book was released on 1992 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of these AASHTO Guidelines is to improve the quality of the traffic information that supports decisions at all levels of the transportation profession. The Guidelines provide a reference for professional traffic monitoring and establish a process for adoption of national traffic nomitoring standards. They specifically address concerns of state transportation agencies.

Download or read book Traffic Monitoring Guide written by United States. Federal Highway Administration. Office of Highway Information Management and published by . This book was released on 1992 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book ITS Deployment Guidance for Transit Systems written by and published by . This book was released on 1997 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt: This technical edition provides guidance for the transit community on developing and implementing ITS systems and using the National ITS Architecture. It is written specifically for the transit community and focuses on transit applications of ITS and the National ITS Architecture. It provides practical assistance based on real life experiences with developing and implementing transit ITS systems. This is a comprehensive document that defines the key concepts, products, and components of ITS and the National ITS Architecture. This document serves as a basic reference tool for understanding and deploying ITS in transit. It consists of six major sections and four appendices.