Download or read book Initial Evaluation of the Existing Technologies for Vehicle Detection written by Dan R. Middleton and published by . This book was released on 1997 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluation of Some Existing Technologies for Vehicle Detection written by Dan R. Middleton and published by . This book was released on 1999 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: Most vehicle detection today relies on inductive loop detectors (ILDs). However, problems with installation and maintenance of these detectors have necessitated evaluation of alternative detection systems. Replacing ILDs with better detectors requires a thorough evaluation of the alternatives. This evaluation included examination of the functional quality, reliability, and cost of these technologies as well as development of recommendations for application. Primary detection technologies included in this study are video image detection systems (VIDS), passive infrared, active infrared, passive magnetic, radar, Doppler microwave, passive acoustic, and ILDs. Results of new detector testing clearly indicate promising alternatives to ILDs, but the limitations of these new detectors must also be accepted. Researchers found that some technologies performed quite well while, in some cases, offering features that are more flexible than ILDs. These technologies include VIDS, passive infrared, active infrared, radar, Doppler microwave, and pulse ultrasonic.
Download or read book Initial Evaluation of Selected Detectors to Replace Inductive Loops on Freeways written by Dan R. Middleton and published by . This book was released on 2000 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluation of Vehicle Detection Technologies for Applications in Georgia written by Jidong Yang (Assistant professor) and published by . This book was released on 2015 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book State of the Art Evaluation of Traffic Detection and Monitoring Systems written by Dan Middleton and published by . This book was released on 2007 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report covers the Phase A and B activities of Research Project SPR 627 for the Arizona Department of Transportation (ADOT). Phase C is planned as a separate research activity and is anticipated to begin in the near term, following the completion of Phases A and B. The need for a better valuation program for new traffic detection systems came in part from a lack of confidence in existing detectors, as well as the need for non-intrusive detectors to replace failing embedded inductive loops. The primary objectives of this research were to identify the most promising vehicle detection technologies to meet ADOT needs, to identify candidate test sites, to develop a field test evaluation plan, and to develop and deliver a detailed design of the detection testbed on the selected segment of freeway. The Texas Transportation Institute (TTI) met these objectives through an Internet and literature search, a state-of-the-practice review, a search of relevant new detector systems, and through meetings with the Technical Advisory Committee (TAC). Relying on TAC input, TTI developed first a conceptual design, followed by a detailed design and budget for a proposed test facility located on I-10 in Phoenix just west of the 16th Street interchange. Detectors selected for test in the initial period of 12-plus months during Phase C (and the technology used) are as follows: Wavetronix SS-125 (microwave radar), Sensys Networks (magnetic), Global Traffic Technologies microloops (magnetic) and Autoscope Solo Pro (video imaging). The baseline system selected for providing ground truth data is the Peek ADR-6000 using inductive signatures as its basis of detection. It is anticipated that this Phase C testing will include two summer seasons to expose selected detectors to the extreme heat and related environmental conditions found in the Phoenix. The initial cost of the testbed will include detectors sufficient to ultimately cover eight lanes in the westbound direction (currently seven lanes) and six lanes in the eastbound direction. Besides the detectors, the total cost estimate includes a 12 ft by 12 ft node building, three equipment cabinets, inductive loops for the baseline system, conduit, and boring. The total cost of the facility is estimated to be approximately $566,000.
Download or read book Detector Technology Evaluation written by Peter T. Martin and published by . This book was released on 2003 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluation of Overhead and In Ground Vehicle Detector Technologies for Traffic Flow Measurement written by LA. Klein and published by . This book was released on 1997 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: As part of the U.S. FHWA-sponsored Detection Technology for IVHS program, ultrasonic, microwave radar, infrared laser radar, nonimaging passive infrared, video image processing with visible and infrared spectrum imagery, acoustic array, high sampling rate inductive loop, conventional inductive loop, microloop, and magnetometer detector technologies were evaluated at freeway and surface street arterial sites in Minnesota, Florida, and Arizona. These states were chosen because they exhibited a wide range of climatic conditions. The criteria for selecting the detector evaluation sites included searching for roadways with high traffic density and suitable structures for mounting the overhead detectors. Approximately 5.9 Gbytes of digital and analog vehicle detection and signature data and more than 300 video tapes of the corresponding traffic flow were recorded.
Download or read book Department of Transportation and Related Agencies Appropriations for 1998 written by United States. Congress. House. Committee on Appropriations. Subcommittee on Dept. of Transportation and Related Agencies Appropriations and published by . This book was released on 1997 with total page 1660 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluation of Cost effective Technologies for Advance Detection written by and published by . This book was released on 2005 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluation of Alternative Detection Technologies for Trains and Highway Vehicles at Highway Rail Intersections written by and published by DIANE Publishing. This book was released on 2003 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluation of Alternative Detection Technologies for Trains and Highway Vehicles at Highway Rail Intersections written by U.s. Department of Transportation and published by CreateSpace. This book was released on 2013-12 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt: Under sponsorship from the Federal Railroad Administration (FRA), the Transportation Technology Center, Inc. (TTCI) and the John A. Volpe National Transportation Systems Center (Volpe Center) evaluated five technologies for their ability to detect trains and/or highway vehicles approaching and occupying highway railroad intersections (HRI). TTCI conducted tests on the performance of these technologies during October and November 1999 at the FRA's Transportation Technology Center in Pueblo, Colorado, USA.
Download or read book Vehicle Detector Evaluation written by Dan Middleton and published by . This book was released on 2002 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt: Most vehicle detection today relies on inductive loop detectors. However, problems with installation and maintenance of these detectors have necessitated evaluation of alternative detection systems. Replacing loops with better detectors requires a thorough evaluation of the alternatives. This research included examination of the performance characteristics, reliability, and cost of these technologies. The detection technologies included in this study were: video image detection, radar, Doppler microwave, passive acoustic, and a system based on inductive loops. Research results clearly indicate promising non-intrusive alternatives to loops, but their limitations must be understood. This research solicited information from a variety of agencies pertaining to installation and use of non-intrusive technologies and conducted field tests on a high volume freeway to determine their suitability for implementation. Findings indicate that non-intrusive detectors have improved since recent detector research sponsored by the Texas Department of Transportation. Count accuracies of 95% and speed accuracies within 5 mph of true values are common during free-flow conditions. During slower congested flow traffic, all non-intrusive device count accuracies degraded to the range of 70 to 90%, and most speed accuracies worsened as well--differing by 10 to 30 mph from the baseline system.
Download or read book Department of Transportation and Related Agencies Appropriations for 1999 written by United States. Congress. House. Committee on Appropriations. Subcommittee on Department of Transportation and Related Agencies Appropriations and published by . This book was released on 1998 with total page 2014 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluation of Alternative Detection Technologies for Trains and Highway Vehicles at Highway Rail Intersections written by and published by . This book was released on 2003 with total page 43 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluation of Selected Video Detection Systems at Signalized Intersections written by Jeromy L. Grenard and published by . This book was released on 2001 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Intelligent Transportation Systems written by Marten Johannes De Vries and published by SPIE-International Society for Optical Engineering. This book was released on 1998 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Summary of Vehicle Detection and Surveillance Technologies Used in Intelligent Transportation Systems written by Luz Elena Yañez Mimbela and published by . This book was released on 2003 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
