Download or read book Estimation of Truck Traffic Volumes written by Rahul Trivedi and published by . This book was released on 1988 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Estimation of Truck Traffic Volume from Single Loop Detectors Using Lane to lane Speed Correlation written by Jaimyoung Kwon and published by . This book was released on 2003 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Estimation of Truck Volumes and Flows written by Maria Boilé and published by . This book was released on 2004 with total page 522 pages. Available in PDF, EPUB and Kindle. Book excerpt: This research presents a statistical approach for estimating truck volumes, based primarily on classification counts and information on roadway functionality, employment, sales volume and number of establishments within the state. Models have been created that may predict truck volumes, flows and percentages at any given location in the state highway network. Profiles of truck traffic are developed for selected roadways, indicating the AADT, truck and passenger car volumes and percentages. The procedure has been modeled into a GIS framework, facilitating data analysis and presentation.
Download or read book Modeling Truck Traffic Volume Growth Congestion written by Gregory Allen Harris and published by . This book was released on 2009 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluation of Methodology for Determining Truck Vehicle Miles Traveled in Illinois written by R. F. Benekohal and published by . This book was released on 2002 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Evaluating the Accuracy Level of Truck Traffic Data on State Highways written by Mitsuru Saito and published by . This book was released on 2009 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: Truck traffic significantly alters the amount of user costs incurred by delays caused by work zones and incidents. Truck traffic also plays an important role in many aspects of UDOT's daily activities, including transportation planning, highway operational analysis, and design of pavement and bridges. This research first studied methods for estimating truck traffic on state highways with a desired level of accuracy, and then evaluated the level of accuracy of the current truck traffic data by a statistical sampling of automatic traffic recorder (ATR) stations (so called, permanent count stations). As it turned out, the accuracy level of the current truck traffic data was not at the level acceptable to UDOT. Although total traffic counts at ATR stations were statistically equivalent to the ground truth count data (only 0.12% difference), trucks larger than 30 ft were undercounted by 21.13% on average and vehicles shorter than 30 ft were over-counted by 5.73% on average. It was found that identifying vehicles in the 30-ft length group (16.1 ft to 30 ft) was the most problematic with the currently used vehicle counting methods
Download or read book Truck Traffic Volume and Weight Data for 1971 and Their Evaluation Final Report written by Robley Winfrey and published by . This book was released on 1976 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Traffic Monitoring Guide written by and published by . This book was released on 1985 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Truck Traffic Volume and Weight Data for 1971 and Their Evaluation written by and published by . This book was released on 1976 with total page 159 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Truck Volume Analysis Procedures Volume 1 Estimation of Truck Volumes Final Report written by R. Trivedi and published by . This book was released on 1988 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Traffic Data Collection Analysis and Forecasting for Mechanistic Pavement Design written by Cambridge Systematics and published by Transportation Research Board. This book was released on 2005 with total page 127 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 Guide for Traffic Volume Counting Manual written by United States. Bureau of Public Roads and published by . This book was released on 1965 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Journal of Transportation and Statistics written by and published by . This book was released on 1998-10 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Determination of the Lanal Distribution of Truck Traffic on Freeway Facilities written by Em. Em Aleksāṇṭar and published by . This book was released on 1971 with total page 146 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 130 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 Estimation Theory Approach to Monitoring and Updating Average Daily Traffic written by Gary A. Davis and published by . This book was released on 1997 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes the application of Bayesian statistical methods to several related problems arising in the estimation of mean daily traffic for roadway locations lacking permanent automatic traffic recorders. A lognormal regression model is fit to daily count data obtained from automatic traffic recorders, and this model is then used to develop (1) a heuristic algorithm for developing traffic sampling plans which minimize the likelihood of assigning a site to an incorrect factor group, (2) an empirical Bayes method for assigning a short-count site to a factor group using the information in a sample of traffic counts, and (3) an empirical Bayes estimator of mean daily traffic which allows for uncertainty concerning the appropriate factors to be used in adjusting a sample count.
