Mereja

Author: New From NAP

  • NCHRP Research Results Digest 365: Sustainable Pavement Maintenance Practices

    Cover imageTRB\’s National Cooperative Highway Research Program (NCHRP) Research Results Digest 365: Sustainable Pavement Maintenance Practices highlights the current practice in sustainable pavement maintenance and preservation.

    The report is designed to help quantify and understand how pavement maintenance and preservation practices minimize environmental impacts.

    As part of the development of this report, a general survey on sustainable pavement preservation and maintenance practices was issued to the state and provincial maintenance engineers in the United States and Canada. The full results of the survey and a summary of the survey are available for download as the following appendixes to NCHRP RRD 365.

    • Appendix A: Survey Results
    • Appendix B: Summary of Survey Results

  • ACRP Report 59: Information Technology Systems at Airports–A Primer

    Cover imageTRB\’s Airport Cooperative Research Program (ACRP) Report 59: Information Technology Systems at Airports–A Primer is designed to help facilitate mutual understanding between airport executives and information technology (IT) professionals to enable them to work together effectively on IT projects. One of the goals of the report is to help airports achieve better performance and reliability of IT systems and fewer cost overruns and delays during system implementation.

    ACRP Report 59 offers techniques to identify critical IT issues and communicate effectively on those issues. The report also addresses sound IT principles for implementing new IT systems, describes the benefits and value of various IT systems, and highlights the fundamental architecture concepts of IT systems as they relate to airports.

  • NCHRP Report 707: Guidelines on the Use of Auxiliary Through Lanes at Signalized Intersections

    Cover imageTRB\’s National Cooperative Highway Research Program (NCHRP) Report 707: Guidelines on the Use of Auxiliary Through Lanes at Signalized Intersections provides guidelines to help in the justification, design, and analysis of auxiliary through lanes (ATLs) at signalized intersections.

    ATLs are lanes for through movements that begin upstream of a signalized intersection and end downstream of the intersection. ATLs are potentially a moderate-cost approach to increase intersection and overall corridor capacity.

    A report that describes the research related to the development of NCHRP Report 707 has been released as NCHRP Web-Only Document 178: Assessment of Auxiliary Through Lanes at Signalized Intersections.

    A spreadsheet-based computational engine is also available online.

    Spreadsheet Disclaimer – This software is offered as is, without warranty or promise of support of any kind either expressed or implied. Under no circumstance will the National Academy of Sciences or the Transportation Research Board (collectively “TRB\’) be liable for any loss or damage caused by the installation or operation of this product. TRB makes no representation or warranty of any kind, expressed or implied, in fact or in law, including without limitation, the warranty of merchantability or the warranty of fitness for a particular purpose, and shall not in any case be liable for any consequential or special damages.

  • ACRP Report 56: Handbook for Considering Practical Greenhouse Gas Emission Reduction Strategies for Airports

    Cover imageTRB\’s Airport Cooperative Research Program (ACRP) Report 56: Handbook for Considering Practical Greenhouse Gas Emission Reduction Strategies for Airports is designed to assist airport operators in identifying, evaluating, prioritizing, and implementing practical, low-cost strategies to reduce and manage greenhouse gas emissions.

    AirportGEAR, an interactive decision support tool developed as a companion to the handbook, considers a range of strategies that can be implemented by all types of airports—regardless of size, geography, or resources—either directly or in partnership with airport stakeholders, including airlines, airport tenants, and host communities. AirportGEAR is on a CD-ROM that is included with the print version of ACRP Report 56.

    The CD-ROM is also available for download as an ISO image. Links to the ISO image and instructions for burning a CD-ROM from an ISO image are provided below.

    Help on Burning an .ISO CD-ROM Image

    Download the .ISO CD-ROM Image

    (Warning: This is a large file and may take some time to download using a high-speed connection.)

    CD-ROM Disclaimer – This software is offered as is, without warranty or promise of support of any kind either expressed or implied. Under no circumstance will the National Academy of Sciences or the Transportation Research Board (collectively “TRB\’) be liable for any loss or damage caused by the installation or operation of this product. TRB makes no representation or warranty of any kind, expressed or implied, in fact or in law, including without limitation, the warranty of merchantability or the warranty of fitness for a particular purpose, and shall not in any case be liable for any consequential or special damages.

    A report documenting the research method used to develop the handbook, fact sheets, and decision support tool is available for download.

  • NCHRP Legal Research Digest 56: The Ramifications of Post-Kelo Legislation on State Transportation Projects

    Cover imageTRB’s National Cooperative Highway Research Program (NCHRP) Legal Research Digest 56: The Ramifications of Post-Kelo Legislation on State Transportation Projects explores the consequences of legislation enacted by state legislatures that limits the use of eminent domain in response to the 2005 United States Supreme Court case of Kelo v. the City of New London, where the Court held that the use of eminent domain to take nonblighted, private property for a city-approved, privately implemented economic development plan was constitutional.

    The report examines how state legislation has affected the use of eminent domain for economic development, for condemning blighted and nonblighted property, and for restricting transfers of condemned property to private parties. The report also examines how states have legislatively redefined the concept of “public use.”

  • NCHRP Report 714: Special Mixture Design Considerations and Methods for Warm-Mix Asphalt: A Supplement to NCHRP Report 673: A Manual for Design of Hot-Mix Asphalt with Commentary

    Cover imageTRB\’s National Cooperative Highway Research Program (NCHRP) Report 714: Special Mixture Design Considerations and Methods for Warm-Mix Asphalt: A Supplement to NCHRP Report 673: A Manual for Design of Hot-Mix Asphalt with Commentary presents special mixture design considerations and methods used with warm-mix asphalt.

    NCHRP Report 714 is a supplement to NCHRP Report 673: A Manual for Design of Hot-Mix Asphalt. All references to chapters in NCHRP Report 714 refer to the corresponding chapters in NCHRP Report 673.

  • TCRP Report 153: Guidelines for Providing Access to Public Transportation Stations

    Cover imageTRB\’s Transit Cooperative Research Program (TCRP) Report 153: Guidelines for Providing Access to Public Transportation Stations is intended to aid in the planning, developing, and improving of access to high capacity commuter rail, heavy rail, light rail, bus rapid transit, and ferry stations. The report includes guidelines for arranging and integrating various station design elements.

    The print version of TCRP Report 153 is accompanied by a CD-ROM that includes a station access planning spreadsheet tool that allows trade-off analyses among the various access modes–automobile, transit, bicycle, pedestrian, and transit-oriented development–for different station types. The appendices to TCRP Report 153 are also available on the CD-ROM.

    The items contained in the CD-ROM are also available for download below.

  • Access Planning Spreadsheet Tool
  • Appendix A: Summary of Stakeholder Survey and Literature Review
  • Appendix B: Overview of Existing Analysis and Evaluation Tools
  • Appendix C: Spreadsheet-Based Access Tool and Instructions
  • Appendix D: Detailed Station-Level Access Data
  • Appendix E: Detailed Station Access Case Studies
    In 2009 TRB released TCRP Web-Only Document 44: Literature Review for Providing Access to Public Transportation Stations, which describes the results of the literature review associated with the project that developed TCRP Report 153.

  • CTBSSP Synthesis 23: Operator Drug- and Alcohol-Testing Across Modes

    Cover imageTRB\’s Commercial Truck and Bus Safety Synthesis Program (CTBSSP) Synthesis 23: Operator Drug- and Alcohol-Testing Across Modes explores practices used to deter drug and alcohol use among operators within the U.S. Department of Transportation\’s (DOT\’s) regulated community.

    The report includes a brief history of the transportation workplace drug- and alcohol-testing program, the general approach, the reasons for testing, some of the issues that impact the validity of the tests, and an outline of the specific regulations by mode.

    Some alcohol- and drug-testing statistics are presented in the report to help provide a sense of the scope of the program and of the prevalence of illegal alcohol and drug use among safety-sensitive employees.

    The report also highlights alternative strategies aimed at helping to deter illegal alcohol and drug use among employees.

  • NCFRP Report 12: Framework and Tools for Estimating Benefits of Specific Freight Network Investments

    Cover imageTRB\’s National Cooperative Freight Research Program (NCFRP) Report 12: Framework and Tools for Estimating Benefits of Specific Freight Network Investments provides a framework and tools designed to help estimate the private and public benefits of potential freight infrastructure investments.

    The evaluation framework is intended to assist public planning and decision-making processes regarding freight; to supplement benefit/cost assessment with distributional impact measures; and to advance public-private cooperation.

    The framework is capable of handling projects that span all of the different modes and able to assess benefits from a variety of project types, including those that are designed to improve freight operations, as well as those that would generate more capacity through infrastructure expansion.

  • CTBSSP Synthesis 21: Driver Selection Tests and Measurement

    Cover imageTRB\’s Commercial Truck and Bus Safety Synthesis Program (CTBSSP) Synthesis 21: Driver Selection Tests and Measurement synthesizes information on the use of tests, measurements, and other assessment methods used by commercial truck and bus companies in the driver selection process. The report also identifies and describes driver selection methods and instruments and their potential usefulness in predicting driver crash risk.

  • HMCRP Research Results Digest 2: Hazardous Materials Cooperative Research Program: A Status Report 2011

    Cover imageTRB\’s Hazardous Materials Cooperative Research Program (HMCRP) Research Results Digest 2: Hazardous Materials Cooperative Research Program: A Status Report provides an update on the industry-driven, applied research program that develops near-term, practical solutions to improve the information used in managing risk associated with the transportation of hazardous materials.

  • NCHRP Report 693: Attracting, Recruiting, and Retaining Skilled Staff for Transportation System Operations and Management

    Cover imageTRB\’s National Cooperative Highway Research Program (NCHRP) Report 693: Attracting, Recruiting, and Retaining Skilled Staff for Transportation System Operations and Management provides guidance designed to help transportation agencies recruit and retain qualified professional staff in the systems operation and management (SOM) area.

    The report explores SOM career paths, skill requirements, and training needs and identifies successful programs, state-of-the-art initiatives, and best industry practices.

    A set of tables showing SOM job categories, number of positions, and educational requirements for all 50 states was published as NCHRP Web-Only Document 182: Appendices to NCHRP Report 693.

    In addition, a summary of the results of the project that developed NCHRP Report 693 and suggestions for senior management personnel related to attracting, recruiting, and retaining skilled staff for transportation system operations and management are available in an online Executive Workbook.

  • NCHRP Research Results Digest 356: Analysis of State Rural Intercity Bus Strategies: Requirements for Utilization of S.5311(f) Funding

    Cover imageTRB\’s National Cooperative Highway Research Program (NCHRP) Research Results Digest 356: Analysis of State Rural Intercity Bus Strategies: Requirements for Utilization of S.5311(f) Funding provides a snapshot of the current status of the program across the nation, and also provides states with examples and recommendations for program implementation.

    Section 5311(f) funds intercity bus service in rural areas, and is a component of the Section 5311 Rural and Small Urban Areas Program.

    NCHRP RRD 356 documents the research and findings conducted under two NCHRP 20-65 task order projects: Task 20—Analysis of Rural Intercity Bus Strategy, and Task 25—Evaluate Requirements for the Utilization of Section 5311(f) Funds for Intercity Bus Service. Both projects focus on state-level implementation of the Federal Transit Administration\’s (FTA) Section 5311(f) funding program. The objectives of the Task 25 research complemented and expanded the work that was under way for Task 20, and thus the research results have been combined into a single report.

  • TCRP Synthesis 94: Innovative Rural Transit Services

    Cover imageTRB\’s Transit Cooperative Research Program (TCRP) Synthesis 94: Innovative Rural Transit Services highlights transit and rural intercity bus service responses to changing rural community transportation needs. The report includes an emphasis on the innovative and/or entrepreneurial spirit, the innovator, and the conditions required for innovation.

  • ACRP Report 37A: Guidebook for Measuring Performance of Automated People Mover Systems at Airports

    Cover imageTRB\’s Airport Cooperative Research Program (ACRP) Report 37A: Guidebook for Measuring Performance of Automated People Mover Systems at Airports is designed to help measure the performance of automated people mover (APM) systems at airports.

    The guidebook identifies, defines, and demonstrates application of a broad range of performance measures encompassing service availability, safety, operations and maintenance expense, capacity utilization, user satisfaction, and reliability.

    The project that developed ACRP Report 37A developed the set of forms below that are designed to help periodically compile the necessary data for input into the overall performance measurement process.
    Form A: System and Service Descriptive Characteristics
    Form B: Airport APM Performance Measures Page 1 of 2
    Form B: Airport APM Performance Measures Page 2 of 2
    Passenger Satisfaction Survey

    The project also developed an interactive Excel model containing spreadsheets that can be used to help track and calculate system-wide performance and service characteristics.

    The set of forms and Excel model are only available electronically.

    ACRP Report 37A is a companion to ACRP Report 37: Guidebook for Planning and Implementing Automated People Mover Systems at Airports, which includes guidance for planning and developing APM systems at airports.

    Disclaimer: The software linked to from this page is offered as is, without warranty or promise of support of any kind either expressed or implied. Under no circumstance will the National Academy of Sciences or the Transportation Research Board (collectively “TRB”) be liable for any loss or damage caused by the installation or operation of this product. TRB makes no representation or warranty of any kind, expressed or implied, in fact or in law, including without limitation, the warranty of merchantability or the warranty of fitness for a particular purpose, and shall not in any case be liable for any consequential or special damages.

  • ACRP Legal Research Digest 12: Fair Disclosure and Airport Impact Statements in Real Estate Transfers

    Cover imageTRB\’s Airport Cooperative Research Program (ACRP) Legal Research Digest 12: Fair Disclosure and Airport Impact Statements in Real Estate Transfers examines the effect of a state or locality having no real property disclosure laws, explores existing general state real property disclosure laws, and discusses existing state real property disclosure laws specifically requiring the disclosure of airports in close proximity to the property being offered for sale.

    The report also highlights annotated typical fair real property disclosure law provisions including provisions considered important for effective fair disclosure of airport-related impacts.

  • TCRP Synthesis 93: Practices to Protect Bus Operators from Passenger Assault

    Cover imageTRB\’s Transit Cooperative Research Program (TCRP) Synthesis 93: Practices to Protect Bus Operators from Passenger Assault highlights practices and policies implemented by transit agencies to deter and mitigate assaults on bus operators.

  • ACRP Report 57: The Carbon Market: A Primer for Airports

    Cover imageTRB\’s Airport Cooperative Research Program (ACRP) Report 57: The Carbon Market: A Primer for Airports provides information on carbon and other environmental credit trading markets, and highlights the potential opportunities and challenges to an airport’s participation in these markets.

    The primer also addresses the new terms and concepts related to the carbon and other environmental markets.

  • CTBSSP Synthesis 20: Potential Safety Benefits of Motor Carrier Operational Efficiencies

    Cover imageTRB\’s Commercial Truck and Bus Safety Synthesis Program (CTBSSP) Synthesis 20: Potential Safety Benefits of Motor Carrier Operational Efficiencies addresses risk avoidance strategies and highlights their use and perceived safety effects. The report is designed to assist motor carriers in deploying their vehicles in ways that may minimize crash risk.

  • NCHRP Report 709: Investigation of Short-Term Laboratory Aging of Neat and Modified Asphalt Binders

    Cover imageTRB\’s National Cooperative Highway Research Program (NCHRP) Report 709: Investigation of Short-Term Laboratory Aging of Neat and Modified Asphalt Binders provides a proposed method of testing for short-term laboratory aging of neat and modified asphalt binders using the modified German rotating flask as an alternative to the rolling thin film oven test.

    The following appendixes A-E to NCHRP Report 709 are only available in electronic format:
    Appendix A: Binder Aging Bibliography
    Appendix B: Selection Study Report
    Appendix C: Volatile Collection System Study Report
    Appendix D: SAFT Optimization Study Report
    Appendix E: Verification Study Report