Download or read book Highway Traffic Estimation written by Robert E. Schmidt and published by . This book was released on 1956 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Highway traffic estimation written by Robert E. Schmidt and published by . This book was released on 1966 with total page 247 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Highway Traffic Estimation and Road User Benefit Analysis written by Ray J. Desjardins and published by . This book was released on 1958 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Highway Traffic Analysis and Design written by R.J. Salter and published by Springer. This book was released on 1989-06-30 with total page 379 pages. Available in PDF, EPUB and Kindle. Book excerpt: A guide to analyzing and predicting traffic. It also covers the various problems encountered when designing traffic signal controls and highways to accommodate the varying volume.

Download or read book Robust State Estimation and Control of Highway Traffic Systems written by Rashid Rahmati Kohan and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In this thesis, a modified second-order continuum model is used to describe the traffic behaviour along highways. The model is identified and verified using several sets of traffic measurements collected from a major highway in metropolitan Toronto, Canada. A robust nonlinear sliding mode observer is developed to generate estimates of average velocity and density for a segment of a highway within a corridor, given loop detector measurements at the end-points of the segment. The sliding mode approach has several advantages over other estimation techniques such as the Kalman Filtering including proof of estimate convergence and simplified computations. However, the primary advantage is the robustness of the observer with respect to unmodelled dynamics and disturbances. Unmodelled dynamics are associated with the traffic factors whose effects cannot be captured (properly) in the traffic flow models, e.g., road geometry and weather conditions. On the other hand, model disturbances such as unavailable (not measured) traffic flow at a ramp or measurements provided by a faulty detector can also create unpredictable traffic states. Based on the presented traffic model, a systematic design procedure is developed to make the observer robust with respect to the modelling uncertainties and unavailable traffic states. Simulation and experimental results show the effectiveness of the proposed observer in estimating the states of a highway traffic system. Moreover, a new decentralized state feedback linearizing controller for ramp metering using variable structure control is presented. The main aim is to develop a robust controller to locally stabilize freeway traffic despite the presence of disturbances and modelling errors. Simulation results show that the proposed controller provides improved performance in achieving the design objectives over other existing ramp control strategies such as neural network and linear feedback controllers.

Download or read book Estimating Traffic on Michigan Highways written by Michigan. State Highway Department and published by . This book was released on 1959 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book State Traffic Safety Information written by and published by . This book was released on 1997 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Estimating Traffic on Michigan Highways written by Michigan. Traffic Division and published by . This book was released on 1959 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Energy saving Approach for Real time Highway Traffic Estimation Using GPS enabled Smartphones written by Daxiao Liu and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper presents a microscopic traffic estimation algorithm for smartphones by employing their built-in probes such as GPS and acceleration sensors to increase the accuracy of real-time traffic condition estimation without significantly increasing the smartphones' energy consumption. In this approach, real-time traffic data is collected through the smartphones of participating users traveling on urban roads. A new reporting algorithm is provided on the clients' side to minimize the amount of time the smartphone maintains connection to the server. Based on the data received from each individual smartphone, real-time traffic conditions and the level of service (LOS) are estimated on the server side by applying the Kalman Filtering algorithm and link aggregating speed algorithm. An iOS application is developed to work as a sample client side smartphone node. Simulations of three different traffic scenario are also created to evaluate the performance of the algorithm. Simulation results show that the proposed algorithm requires less energy usage than existing methods without sacrificing the accuracy of real-time traffic estimations.

Download or read book Principles of Highway Engineering and Traffic Analysis written by Fred L. Mannering and published by John Wiley & Sons. This book was released on 2020-07-08 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt: Highly regarded for its clarity and depth of coverage, the bestselling Principles of Highway Engineering and Traffic Analysis provides a comprehensive introduction to the highway-related problems civil engineers encounter every day. Emphasizing practical applications and up-to-date methods, this book prepares students for real-world practice while building the essential knowledge base required of a transportation professional. In-depth coverage of highway engineering and traffic analysis, road vehicle performance, traffic flow and highway capacity, pavement design, travel demand, traffic forecasting, and other essential topics equips students with the understanding they need to analyze and solve the problems facing America’s highway system. This new Seventh Edition features a new e-book format that allows for enhanced pedagogy, with instant access to solutions for selected problems. Coverage focuses exclusively on highway transportation to reflect the dominance of U.S. highway travel and the resulting employment opportunities, while the depth and scope of coverage is designed to prepare students for success on standardized civil engineering exams.

Download or read book Observational Before after Studies in Road Safety Estimating the Effect of Highway and Traffic Engineering Measures on Road Safety written by Ezra Hauer and published by . This book was released on 1997 with total page 305 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Real time Estimation of Distributed Parameters Systems written by Daniel Benjamin Work and published by . This book was released on 2010 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation is motivated by the practical problem of highway traffic estimation using velocity measurements from GPS enabled mobile devices such as cell phones. In order to simplify the estimation procedure, a velocity model for highway traffic is constructed, which results in a dynamical system in which the observation operator is linear. It presents a new scalar hyperbolic partial differential equation (PDE) model for traffic velocity evolution on highways, based on the seminal Lighthill-Whitham-Richards (LWR) PDE for density. Equivalence of the solution of the new velocity PDE and the solution of the LWR PDE is shown for quadratic flux functions. Because this equivalence does not hold for general flux functions, a discretized model of velocity evolution based on the Godunov scheme applied to the LWR PDE is proposed. Using an explicit instantiation of the weak boundary conditions of the PDE, the discrete velocity evolution model is generalized to a network, thus making the model applicable to arbitrary highway networks. The resulting velocity model is a nonlinear and nondifferentiable discrete time dynamical system with a linear observation operator, for which a Monte Carlo based ensemble Kalman filtering data assimilation algorithm is applied. The model and estimation technique is evaluated with experimental data obtained from a large-scale field experiment known as Mobile Century. The velocity estimates using GPS data from cellphones is compared to velocity estimates using inductive loop detector data from the PeMS system. More than 900 estimation simulations are performed using various volumes of GPS data and inductive loop detector data collected during the experiment, which show travel times can be reconstructed to less than 10% error with sufficient GPS data, loop data, or a combination of both. All data collected during the field experiment and used in the simulations are available for download at http://traffic.berkeley.edu.

Download or read book An Evaluation of Growth Factor Methods of Traffic Estimation written by Leon F. Bergmann and published by . This book was released on 1965 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Highway Traffic Noise Analysis and Abatement written by United States. Federal Highway Administration. Office of Environment and Planning. Noise and Air Quality Branch and published by . This book was released on 1995 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Moving Vehicle Method of Estimating Traffic Volumes and Speeds written by Cook County (Ill.). Department of Highways and published by . This book was released on 1956 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book FHWA Highway Traffic Noise Prediction Model Final Report written by Timothy M. Barry and published by . This book was released on 1978 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Estimating Toll Road Demand and Revenue written by David S. Kriger and published by Transportation Research Board National Research. This book was released on 2006 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt: