Download or read book Minimum Retroreflectivity Levels for Blue and Brown Traffic Signs written by Andrew J. Holick and published by . This book was released on 2008 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Practices to Manage Traffic Sign Retroreflectivity written by Jonathan M. Re and published by Transportation Research Board. This book was released on 2012 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt: TRB’s National Cooperative Highway Research Program (NCHRP) Synthesis 431: Practices to Manage Traffic Sign Retroreflectivity includes examples of practices that illustrate how different types of transportation agencies might meet federal retroreflectivity requirements for traffic signs.
Download or read book Implementation Strategies for Sign Retroreflectivity Standards written by Kent L. Black and published by Transportation Research Board. This book was released on 1992 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Updated Minimum Retroreflectivity Levels for Traffic Signs written by Paul John Carlson and published by . This book was released on 2003 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report includes an updated set of recommended MR levels for traffic signs based on recent developments in vehicle headlamps, vehicle types/sizes, nighttime driver needs, and newer sheeting materials. The updated MR levels are also based on more robust computer modeling of retroreflective sheeting performance.
Download or read book Managing Selected Transportation Assets written by Michael J. Markow and published by Transportation Research Board. This book was released on 2007 with total page 199 pages. Available in PDF, EPUB and Kindle. Book excerpt: NCHRP synthesis 371 explores the state of the practice for managing transportation infrastructure assets other than pavements and bridges, and documents gaps in knowledge and areas in need of potential further study.
Download or read book Roadside Design Guide written by American Association of State Highway and Transportation Officials. Task Force for Roadside Safety and published by . This book was released on 1989 with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Minimum Retroreflectivity of Traffic Signs and Pavement Markings written by Steve J. Gent and published by . This book was released on 1995 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Transportation Research Record written by and published by . This book was released on 2004 with total page 656 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fatal Accident Reporting System written by and published by . This book was released on 1996 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Public Roads written by and published by . This book was released on 1998 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book International Conference on Transportation written by and published by DEStech Publications, Inc. This book was released on 2013-12-12 with total page 462 pages. Available in PDF, EPUB and Kindle. Book excerpt: The main objectives of 2013 International Conference on Transportation (ICTR2013) are to bring together representatives of transportation engineering , of various institutions, universities, industry and professional associations, to debate and exchange experience on important conference topics. Another main objective of ICTR2013 consists of providing a good networking opportunity to all these groups. The ICTR2013 became a major conference to exchang e new ideas of transportation in Asia researchers and provide a form to present their new results in transportation engineering, vehicle operation engineering, transportation planning, traffic information engineering and control, pavement and bridge engin eering and other related topics. ICTR2013 is held in Xianning, China from December 4 to 6, 2013 sponsored by Shanghai Jiaotong University and DES t ech Publishing Inc. In the first edition of the ICTR2013 189 papers were submitted, 69 of which were accepted . In addition to the authors that were present at the conference, researchers from universities and institutions also send papers. The organizing committee hopes this conference proceedings will provide readers a broad overview of the latest advances on tr ansportation. The organizing committee also believes this conference proceedings would be a good reference for academic researchers and industrial professionals in these fields. The ICTR2013 organizing committee would like to express our sincere appreciat ions to all authors for their contributions to this conference. We would like to extend our thanks to all the referees for their constructive comments on all papers. Finally, we would like to thank DES t ech publishing Inc . for producing this conference proc eeding. We hope you will have a unique, rewarding and enjoyable weekend at ICTR2013 in Xianning, China.
Download or read book Manual on Uniform Traffic Control Devices for Streets and Highways written by United States. National Advisory Committee on Uniform Traffic Control Devices and published by . This book was released on 1978 with total page 896 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Review of Retroreflective Sign Sheeting Materials Practices and Policies written by Gerardo W. Flintsch and published by . This book was released on 1993 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduction -- Retroreflectivity standards -- Sign sheeting materials survey -- Minimum retroreflectivity requirements -- Summary and recommendations -- References -- Appendix I: Traffic sign sheeting materials survey -- Appendix II: Comparison of standard retroreflectivity requirements.
Download or read book Updates to Research on Recommended Minimum Levels for Pavement Marking Retroreflectivity to Meet Driver Night Visibility Needs written by and published by . This book was released on 2007 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this study, the Pavement Marking Visibility Module of the Tarvip model was validated by comparing field data from various studies to prediction results under similar conditions from Tarvip. Next, a comprehensive survey on the factors that affect pavement marking visibility and minimum RL levels was performed, with key factors identified, including pavement marking configuration, pavement surface type, vehicle speed, vehicle type, and presence of RRPMs. From these key factors, a methodology of using Tarvip to do a sensitivity analysis on factors modeled in it was developed. The plan was executed, and resulting RL values under typical conditions on United States roadways formed the basis of new recommendations. Finally, limitations of the recommendations were analyzed, and a plan for future research was presented. This study was aimed at completing the research to develop and scrutinize minimum levels for pavement marking retroreflectivity to meet nighttime driving needs. A previous study carried out in the 1990s was based on the CARVE model developed at Ohio University and resulted in a table of minimum levels of pavement marking retroreflectiviy values. Since then, a newer, more powerful analytical tool, Tarvip, which was developed at the Operator Performance Lab of the University of Iowa, overcomes a lot of limitations of the CARVE model and uses updated data that reflect the current states of vehicles and roadways in the United States.
Download or read book Transportation Asset Management written by Zongzhi Li and published by CRC Press. This book was released on 2018-08-31 with total page 731 pages. Available in PDF, EPUB and Kindle. Book excerpt: Transportation asset management delivers efficient and cost-effective investment decisions to support transportation infrastructure and system usage performance measured in economic, social, health, and environmental terms. It can be applied at national, state, and local levels. This distinctive book addresses asset management for multimodal transportation, taking account of system component interdependency, integration, and risk and uncertainty. It sets out rigorous quantitative and qualitative methods for addressing system goals, performance measures, and needs; data collection and management; performance modeling; project evaluation, selection, and trade-off analysis; innovative financing; and institutional issues. It applies as easily to static traffic and time-dependent or dynamic traffic which exists on a more local level. It is written for transportation planners, engineers, and academia, as well as a growing number of graduate students taking transportation asset management courses.
Download or read book Headlamp Illumination Provided to Sign Positions by Passenger Vehicles written by Susan T. Chrysler and published by . This book was released on 2003 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt: Traffic sign visibility at night is largely determined by sign luminance. Sign luminance, in turn, is determined by viewing geometry, retroreflective characteristics of the sign material, and headlamp illumination. Computer modeling of sign luminance has advanced to allow sign luminance to be predicted based on data sets of retroreflective material performance and headlamp luminous intensity matrices. This research project sought to assess the amount and variability of illumination provided to sign positions by a sample of Texas vehicles. The Texas Transportation Institute measured vehicle dimensions and headlamp illuminance at prespecified points representing typical sign locations. Data collection included 25 passenger cars and 21 light trucks and vans. Vehicles were measured without aiming, but after cleaning the headlamps. Each lamp was measured independently and total illuminance at sign locations was calculated. The project found that the vehicle dimensions specified in computer models encompassed the vehicles measured. The illumination values obtained were also in the range of those provided by the composite lamps in the existing computer models. Theoretical sign luminance values for different types of retroreflective sheeting were calculated using the median illumination values from the vehicles measured. The project confirms the validity of using computer models to predict sign luminance. It also confirmed current TxDOT retroreflective sheeting policy. It is recommended that TxDOT consistently aim the headlamps of vehicles used to perform nighttime sign inspections to assure consistency of sign appearance.
Download or read book Retroreflectivity of Roadway Signs for Adequate Visibility written by and published by . This book was released on 1987 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: This manual deals with the reflectivity of traffic signs. It interprets and explains the specifications and test procedures in the standard specifications for construction of roads and bridges on federal highway projects (fp-85) dealing with retroreflective sheeting and related matters and provides guidance where appropriate. Topics covered include: 1) principles of retroreflection and characteristics of sign reflective sheeting. 2) Considerations in selecting different sheeting types. 3) Fp-85 specifications and test procedures. 4) Sign fabrication. 5) Handling, stockpiling, and installing. 6) Inventory, inspection, and replacement. 7) Maintenance.
