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Transit Cooperative Research Program (TCRP) Research Results Digests (RRDs)

RRDs are used to promote early awareness of project results in order to encourage implementation. RRDs also summarize specific findings that emphasize how the research may be used. The contents are organized in terms of the problem and the solution to it, the findings, and the applications. RRDs generally run 4–32 printed pages.

Use of Agency Service Agreements in ADA Paratransit DeliveryUse of Agency Service Agreements in ADA Paratransit Delivery
August 25, 2021
All transit agencies must provide complementary paratransit service to eligible people, as required under the Americans with Disabilities Act (ADA). This includes origin-to-destination service for their ADA complementary paratransit riders. The TRB Transit Cooperative Research Program's TCRP Research Results Digest 115: Use of Agency Service Agreements in ADA Paratransit Delivery identifies and...

Synthesis of Information Related to Transit Practices: 2018Synthesis of Information Related to Transit Practices: 2018
December 17, 2017
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 114: Synthesis of Information Related to Transit Practices is a digest of the progress and status of TCRP Project J-7, “Synthesis of Information Related to Transit Practices,” for which the Transportation Research Board is the agency conducting the research.

Contracting Commuter Rail Services Contracting Commuter Rail Services
September 9, 2016
TRB's Transit Cooperative Research Program (TCRP) Research Results Digest 112: Contracting Commuter Rail Services provides guidance for public agencies and other key stakeholders in contracting commuter rail services. The digest presents potential approaches for contracting commuter rail services, an evaluation of the approaches, and guidance on how and when to apply different approaches to exi...

Synthesis of Information Related to Transit Practices: 2016Synthesis of Information Related to Transit Practices: 2016
January 6, 2016
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 111: Synthesis of Information Related to Transit Practices is a digest of the progress and status of TCRP Project J-7, “Synthesis of Information Related to Transit Practices,” for which the Transportation Research Board is the agency conducting the research.

Synthesis of Information Related to Transit Practices: 2017Synthesis of Information Related to Transit Practices: 2017
January 25, 2017
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 113: Synthesis of Information Related to Transit Practices is a digest of the progress and status of TCRP Project J-7, “Synthesis of Information Related to Transit Practices,” for which the Transportation Research Board is the agency conducting the research.

Synthesis of Information Related to Transit Problems: 2015Synthesis of Information Related to Transit Problems: 2015
January 6, 2015
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 110: Synthesis of Information Related to Transit Problems is a digest of the progress and status of TCRP Project J-7, “Synthesis of Information Related to Transit Problems,” for which the Transportation Research Board is the agency conducting the research.

Impact of the Affordable Care Act on Non-Emergency Medical Transportation (NEMT): Assessment for Transit AgenciesImpact of the Affordable Care Act on Non-Emergency Medical Transportation (NEMT): Assessment for Transit Agencies
October 22, 2014
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 109: Impact of the Affordable Care Act on Non-Emergency Medical Transportation (NEMT): Assessment for Transit Agencies assesses the potential impact of implementing the NEMT provision of the Affordable Care Act on a state-by-state basis. The report also collates information to inform the transit community on how public tr...

Synthesis of Information Related to Transit Problems: 2014Synthesis of Information Related to Transit Problems: 2014
January 1, 2014
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 108: Synthesis of Information Related to Transit Problems is a digest of the progress and status of TCRP Project J-7, “Synthesis of Information Related to Transit Problems,” for which the Transportation Research Board is the agency conducting the research.

Developing Partnerships between Transportation Agencies and the Disability and Underrepresented CommunitiesDeveloping Partnerships between Transportation Agencies and the Disability and Underrepresented Communities
May 17, 2013
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 107: Developing Partnerships between Transportation Agencies and the Disability and Underrepresented Communities includes best practices and outreach strategies and suggestions that can be used by transit personnel to develop and maintain partnerships with the disability and underrepresented communities. The guide include...

Synthesis of Information Related to Transit Problems: 2013Synthesis of Information Related to Transit Problems: 2013
February 2, 2013
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 106: Synthesis of Information Related to Transit Problems is a digest of the progress and status of TCRP Project J-7, “Synthesis of Information Related to Transit Problems,” for which the Transportation Research Board is the agency conducting the research.

Summary of Research Findings: Assessing and Comparing Environmental Performance of Major Transit InvestmentsSummary of Research Findings: Assessing and Comparing Environmental Performance of Major Transit Investments
May 25, 2012
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 105: Summary of Research Findings: Assessing and Comparing Environmental Performance of Major Transit Investments offers decision makers optional criteria, metrics, and methods to help assess the environmental performance of transit projects. The final report of the research project that was used to produce TCRP RRD 105 w...

Synthesis of Information Related to Transit Problems: 2012Synthesis of Information Related to Transit Problems: 2012
February 4, 2012
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 104: Synthesis of Information Related to Transit Problems is a digest of the progress and status of TCRP Project J-7, “Synthesis of Information Related to Transit Problems,” for which the Transportation Research Board is the agency conducting the research.

Sustainable Public Transportation: Environmentally Friendly MobilitySustainable Public Transportation: Environmentally Friendly Mobility
December 12, 2011
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 103: Sustainable Public Transportation: Environmentally Friendly Mobility is an overview of an international study mission that explored how public transportation systems in several cities in India and China have implemented plans, policies, technologies, and strategies for creating more livable communities through bus, m...

Public Transportation Systems as the Foundation for Economic GrowthPublic Transportation Systems as the Foundation for Economic Growth
June 27, 2011
TRB’s Transit Cooperative Research Program (TCRP) RRD 102: Public Transportation Systems as the Foundation for Economic Growth examines how transit investments are linked to economic growth and recovery in several cities in Turkey, Egypt, and South Africa.

Funding for Infrastructure Maintenance: Achieving and Sustaining a State of Good RepairFunding for Infrastructure Maintenance: Achieving and Sustaining a State of Good Repair
June 27, 2011
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 101: Funding for Infrastructure Maintenance: Achieving and Sustaining a State of Good Repair examines how bus and rail agencies and operators in several European cities develop community support for public transportation and how those communities implement sustainable funding strategies for transit assets, operations, and...

Professional Certification and Credentialing Program for the Transit IndustryProfessional Certification and Credentialing Program for the Transit Industry
April 21, 2011
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 100: Professional Certification and Credentialing Program for the Transit Industry explores the findings of a literature review and a gap analysis of the efficacy of four transit-specific professional development programs. The report also examines potential strategies that might be used to deploy and maintain a transit in...

Improving Mobility for VeteransImproving Mobility for Veterans
April 27, 2011
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 99: Improving Mobility for Veterans mobility explores issues facing our veterans and illustrates some potential strategies for community transportation providers who are interested in enhancing mobility options for our veterans.

Synthesis of Information Related to Transit Problems: 2011Synthesis of Information Related to Transit Problems: 2011
February 3, 2011
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 98: Synthesis of Information Related to Transit Problems is a digest of the progress and status of TCRP Project J-7, “Synthesis of Information Related to Transit Problems,” for which the Transportation Research Board is the agency conducting the research.

Transit Agency Compliance with Title VI: Limited English Proficiency RequirementsTransit Agency Compliance with Title VI: Limited English Proficiency Requirements
February 2, 2011
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 97: Transit Agency Compliance with Title VI: Limited English Proficiency Requirements explores the legal issues associated with transit operators’ limited English proficiency (LEP) compliance efforts. The digest is designed to serve as a single source of information concerning the development and current status of transit...

Managing Increasing Ridership DemandManaging Increasing Ridership Demand
September 14, 2010
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 96: Managing Increasing Ridership Demand documents a 2009 study mission to Guayaquil, Ecuador; Santiago, Chile; Buenos Aires, Argentina; and Porto Alegre, Brazil, that investigated how transit operators and agencies in these cities accommodated sudden and significant growth in the number of riders and increasing dema...

Performance Measurement and OutcomesPerformance Measurement and Outcomes
April 23, 2010
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 95: Performance Measurement and Outcomes explores how performance measurements are used to achieve organizational goals and enhance quality of service at public transport planning, funding, and operating agencies in Hong Kong, Special Administrative Region of the People’s Republic of China; in the city-state of Singapore;...

Synthesis of Information Related to Transit Problems: 2010Synthesis of Information Related to Transit Problems: 2010
February 1, 2010
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 94: Synthesis of Information Related to Transit Problems is a digest of the progress and status of TCRP Project J-7, “Synthesis of Information Related to Transit Problems,” for which the Transportation Research Board is the agency conducting the research.

Balancing Infrastructure Reinvestment with System ExpansionBalancing Infrastructure Reinvestment with System Expansion
November 6, 2009
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 92: Balancing Infrastructure Reinvestment with System Expansion explores how public transport agencies in Australia are balancing the need to increase capacity and expand service while maintaining and upgrading their existing bus, tram, rail, and ferry infrastructure.

Rural Transit Achievements: Assessing the Outcomes of Increased Funding for Rural Passenger Services Under SAFETEA-LURural Transit Achievements: Assessing the Outcomes of Increased Funding for Rural Passenger Services Under SAFETEA-LU
October 1, 2009
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 93: Rural Transit Achievements: Assessing the Outcomes of Increased Funding for Rural Passenger Services Under SAFETEA-LU (the Safe, Accountable, Flexible, and Efficient Transportation Equity Act: A Legacy for Users) is a summary of a report that explores data and information on the changes in rural public and intercity b...

Synthesis of Information Related to Transit Problems: 2009Synthesis of Information Related to Transit Problems: 2009
February 4, 2009
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 91: Synthesis of Information Related to Transit Problems is a digest of the progress and status of TCRP Project J-7, “Synthesis of Information Related to Transit Problems,” for which the Transportation Research Board is the agency conducting the research.

A Guide to Planning Resources on Transportation and HazardsA Guide to Planning Resources on Transportation and Hazards
September 29, 2009
TRB's National Cooperative Highway Research Program (NCHRP) and Transit Cooperative Research Program (TCRP) have jointly released A Guide to Planning Resources on Transportation and Hazards. The report was published as NCHRP Research Results Digest (RRD) 333 and as TCRP RRD 90. The report highlights a framework for thinking about the stages of a disaster, and identifies some of the most current...

Public Transportation's Role in Addressing Global Climate ChangePublic Transportation's Role in Addressing Global Climate Change
March 25, 2009
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 89: Public Transportation’s Role in Addressing Global Climate Change provides an overview of an International Transit Studies Program mission that investigated public transportation’s role in addressing global climate change in several cities in Ireland, Germany, Italy, and Spain.

Innovative Practices in Transit Workforce DevelopmentInnovative Practices in Transit Workforce Development
July 14, 2008
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 88: Innovative Practices in Transit Workforce Development examines innovative practices in workforce development in several cities in Canada, France, and Belgium.

Emergency Preparedness, Response, and Recovery in the Transit IndustryEmergency Preparedness, Response, and Recovery in the Transit Industry
May 16, 2008
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 87: Emergency Preparedness, Response, and Recovery in the Transit Industry explores emergency preparedness programs in public transportation systems in several Asian cities.

Synthesis of Information Related to Transit ProblemsSynthesis of Information Related to Transit Problems
January 24, 2008
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 86: Synthesis of Information Related to Transit Problems is a digest of the progress and status of TCRP Project J-7, “Synthesis of Information Related to Transit Problems,” for which the Transportation Research Board is the agency conducting the research.

Rail Passenger Safety: Equipment and TechnologiesRail Passenger Safety: Equipment and Technologies
August 30, 2007
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 85, Rail Passenger Safety: Equipment and Technologies provides an overview of a study mission performed October 13-28, 2006, that investigated European rail safety programs.  Over their two weeks in Europe, study mission team members visited organizations and facilities in Berlin and Hennigsdorf, Germany; Reic...

Audible Signals for Pedestrian Safety in LRT EnvironmentsAudible Signals for Pedestrian Safety in LRT Environments
June 29, 2007
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 84: Audible Signals for Pedestrian Safety in LRT Environments examines the application of audible signals for pedestrian safety in light rail transit (LRT) environments.  The report includes descriptions of audible signal systems and associated operating procedures, their integration with other crossing measur...

Performance and Testing Requirements for Portable Track Geometry Inspection SystemsPerformance and Testing Requirements for Portable Track Geometry Inspection Systems
June 18, 2007
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 83: Performance and Testing Requirements for Portable Track Geometry Inspection Systems examines portable track geometry measurement systems and their applicability to transit operations.  The report also explores performance guidelines and testing requirements for use by transit agencies in evaluating and sel...

Use of Guard/Girder/Restraining RailUse of Guard/Girder/Restraining Rail
April 16, 2007
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 82: Use of Guard/Girder/Restraining Rail explores the application of guard/girder/restraining rails by transit systems in order to improve vehicle curving performance, to reduce risk of flange climb derailment, and to control wheel and rail wear.

Coordinated Approaches to Expanding Access to Public TransportationCoordinated Approaches to Expanding Access to Public Transportation
February 26, 2007
TRB’s Transit Cooperative Research Program (TCRP) RRD 81: Coordinated Approaches to Expanding Access to Public Transportation explores a study mission that examined coordinated approaches to expanding access to public transportation in the United Kingdom, the Netherlands, Sweden, and France.

Synthesis of Information Related to Transit ProblemsSynthesis of Information Related to Transit Problems
January 15, 2007
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 80: Synthesis of Information Related to Transit Problems is a digest of the progress and status of TCRP Project J-7, “Synthesis of Information Related to Transit Problems,” for which the Transportation Research Board is the agency conducting the research.

Design of Track TransitionsDesign of Track Transitions
October 26, 2006
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 79: Design of Track Transitions explores various transit track transition designs among ballasted and nonballasted track forms and structures and offers guidance to improve track and operating performance.

Managing Capital Costs of Major Federally Funded Public Transportation Projects: Research Results DigestManaging Capital Costs of Major Federally Funded Public Transportation Projects: Research Results Digest
October 25, 2006
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 78: Managing Capital Costs of Major Federally Funded Public Transportation Projects examines strategies, tools, and techniques to better manage major transit capital projects over $100 million.  The report also examines various estimation, project-management, and cost-containment approaches that were applied t...

Innovative Techniques in the Planning and Financing of Public Transportation ProjectsInnovative Techniques in the Planning and Financing of Public Transportation Projects
June 7, 2006
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 77: Innovative Techniques in the Planning and Financing of Public Transportation Projects provides an overview of the study mission performed October 20–November 5, 2005, that investigated innovative techniques in the planning and financing of public transportation projects in Spain, Denmark, the People’s Republic of Chi...

Acoustic Rail-Break Detection Demonstration at MTA New York City TransitAcoustic Rail-Break Detection Demonstration at MTA New York City Transit
May 18, 2006
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 76: Acoustic Rail-Break Detection Demonstration at MTA New York City Transit examines the results of a demonstration of an acoustic-based rail-break detection system that was installed over a 2,200 foot section of track on the “A” line of the Metropolitan Transportation Authority (MTA) New York City Tra...

Executive Summary: Cost-Benefit Analysis of Providing Non-Emergency Medical TransportationExecutive Summary: Cost-Benefit Analysis of Providing Non-Emergency Medical Transportation
January 26, 2006
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 75, Executive Summary: Cost-Benefit Analysis of Providing Non-Emergency Medical Transportation examines the relative costs and benefits of providing transportation to non-emergency medical care for individuals who miss or delay healthcare appointments because of transportation issues.  The final report is available ...

Train Door Systems AnalysisTrain Door Systems Analysis
March 17, 2006
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 74: Train Door Systems Analysis examines the development of a relational database for data on the causes and conditions of train door failures and reviews some preliminary analyses of the data.  The appendixes to the report have been published as TCRP Web-Only Document 28.

Synthesis of Information Related to Transit ProblemsSynthesis of Information Related to Transit Problems
January 24, 2006
TRB's Transit Cooperative Research Program (TCRP) Research Results Digest 73: Synthesis of Information Related to Transit Problems provides information on the mission and goals of the TCRP synthesis program, and describes the progress and status of TCRP synthesis projects.

Guidelines for an Alternative Transit Switch DesignGuidelines for an Alternative Transit Switch Design
February 8, 2006
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 72: Guidelines for an Alternative Transit Switch Design includes design guidelines for a new transit switch based partially on longer-lasting, better-performing switches that were developed in the early 20th century, some of which are still in operation today.  The design guidelines described in the report build on ...

Implementing New Technologies in Maintenance Systems and Departments in EuropeImplementing New Technologies in Maintenance Systems and Departments in Europe
December 9, 2005
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 71: Implementing New Technologies in Maintenance Systems and Departments in Europe summarizes the International Transit Studies Program mission of April 7-22, 2005, that investigated the application of new technologies in bus and rail transit operations in Germany, Austria, and France.

Innovations in Bus, Rail, and Specialized Transit Operations in Latin AmericaInnovations in Bus, Rail, and Specialized Transit Operations in Latin America
June 3, 2005
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 70: Innovations in Bus, Rail, and Specialized Transit Operations in Latin America summarizes an October 21-November 5, 2004, international study mission to São Paulo, Rio de Janeiro, and Brasília, Brazil; Santiago, Chile; and Quito, Ecuador.  Rapid population growth, high-density areas, an aging population, increase...

Evaluation of Recent Ridership IncreasesEvaluation of Recent Ridership Increases
April 21, 2005
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 69: Evaluation of Recent Ridership Increases assesses key factors and initiatives that led to ridership increases at 28 transit agencies, nationwide, for the period 2000 to 2002.

Vehicle Design Standards and Procurement Practices in EuropeVehicle Design Standards and Procurement Practices in Europe
February 2, 2005
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 68: Vehicle Design Standards and Procurement Practices in Europe provides an overview of the study mission performed May 6-21, 2004, that investigated vehicle design standards and procurement practices in Europe.

Synthesis of Information Related to Transit ProblemsSynthesis of Information Related to Transit Problems
September 28, 2004
TRB's Transit Cooperative Research Program (TCRP) Research Results Digest 67: Synthesis of Information Related to Transit Problems provides information on the mission and goals of the TCRP synthesis program, and describes the progress and status of TCRP synthesis projects.

Transit Design, Construction, and Operations in the Mediterranean RegionTransit Design, Construction, and Operations in the Mediterranean Region
September 1, 2004
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 66: Transit Design, Construction, and Operations in the Mediterranean Region provides an overview of an international transit studies mission that investigated transit design, construction, and operation in Athens, Greece, and in Naples, Rome, and Milan, Italy.

A New Vision of Mobility: Guidance to Foster Collaborative Multimodal Decision MakingA New Vision of Mobility: Guidance to Foster Collaborative Multimodal Decision Making
February 26, 2004
TRB’s Transit Cooperative Research Program (TCRP) and National Cooperative Highway Research Program (NCHRP) have jointly produced Research Results Digest TCRP 65/NCHRP 288 -- A New Vision of Mobility: Guidance to Foster Collaborative Multimodal Decision Making. The single digest summarizes the results of the first phase of a TCRP and NCHRP jointly funded project that will eventually produce a s...

Synthesis of Information Related to Transit ProblemsSynthesis of Information Related to Transit Problems
September 29, 2003
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 63: Synthesis of Information Related to Transit Problems outlines the TCRP synthesis research process and provides a list of ongoing and completed transit synthesis reports.

Transit Operations in Central and Eastern EuropeTransit Operations in Central and Eastern Europe
September 2, 2003
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 62: International Transit Studies Program: Transit Operations in Central and Eastern Europe includes transportation information on the cities and facilities visited, lessons learned, and discussions of policies and practices that could be applied in the United States.

Traveler Response to Transportation System Changes: An Interim Introduction to the HandbookTraveler Response to Transportation System Changes: An Interim Introduction to the Handbook
December 18, 2003
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 61 - Traveler Response to Transportation System Changes: An Interim Introduction to the Handbook is structured to serve as an “Interim Introduction” for the evolving Traveler Response Handbook, replacing Chapter 1, “Introduction” of the “Interim Handbook” (available as TCRP Web Document 12), and facilitating the transitio...

Characteristics of State Funding for Public Transportation -- 2002Characteristics of State Funding for Public Transportation -- 2002
July 18, 2003
TRB Transit Cooperative Research Program (TCRP) Research Results Digest 60: Characteristics of State Funding for Public Transportation -- 2002 provides information on the nature and magnitude of FY 2002 state transit funding for 46 states and the District of Columbia including state transit funding sources and amounts, programs, eligible uses and allocation, and per capita state transit funding.

A Guide to Public Transportation Security ResourcesA Guide to Public Transportation Security Resources
May 30, 2003
TRB's Transit Cooperative Research Program (TCRP) Research Results Digest 59: A Guide to Public Transportation Security Resources provides a listing of available (or soon-to-be-available) security resources, which can be obtained from public transportation systems, organizations, associations, institutions, and others.

Developing a Recommended Standard for Automated Fare Collection for Transit: Scoping Study--Regional Fare Management ProgramsDeveloping a Recommended Standard for Automated Fare Collection for Transit: Scoping Study--Regional Fare Management Programs
February 5, 2003
TRB's Transit Cooperative Research Program (TCRP) Research Results Digest 57: Developing a Recommended Standard for Automated Fare Collection for Transit provides guidance on how best to apply automated fare collection in multi-agency, regional environments.

Developing a Transit Performance-Measurement SystemDeveloping a Transit Performance-Measurement System
January 24, 2003
TRB's Transit Cooperative Research Program (TCRP) Research Results Digest Number 56: A Summary of TCRP Report 88 -- A Guidebook for Developing a Transit Performance-Measurement System provides an easy-to-read summary of the guidebook that provides a step-by-step process for developing a performance-measurement program.

Support for Fundamental Change in Public TransportationSupport for Fundamental Change in Public Transportation
January 8, 2003
TRB's Transit Cooperative Research Program (TCRP) Research Results Digest 55: Support for Fundamental Change in Public Transportation, addresses major dimensions of fundamental change; illustrates a few extraordinary, fundamental changes that are being pursued by transit organizations; and calls attention to immediate opportunities to support and sustain fundamental change in the U.S. transit i...

United States Transit Could Benefit from International ResearchUnited States Transit Could Benefit from International Research
December 12, 2002
TRB's Transit Cooperative Research Program (TCRP) Research Results Digest 54, Emerging Trends in European Public Transport, includes transportation information, lessons learned, and discussions on policies and practices on emerging trends in European public transport that could be applied to the United States.

Transit-Oriented Development and Joint Development in the United States: A Literature ReviewTransit-Oriented Development and Joint Development in the United States: A Literature Review
November 21, 2002
TRB's Transit Cooperative Research Program (TCRP) Research Results Digest 52: Transit-Oriented Development and Joint Development in the United States: A Literature Review includes descriptions of the institutional issues related to transit-oriented development and transit joint development, and examples of related impacts and benefits.

Projects Increase Awareness of Light Rail Transit Warning SignsProjects Increase Awareness of Light Rail Transit Warning Signs
December 12, 2002
TRB's Transit Cooperative Research Program (TCRP) Research Results Digest 51: Second-Train-Coming Warning Sign Demonstration Projects summarizes the results of demonstration projects in Maryland and California concerning second-train-coming warning signs for light rail transit systems.

Transit and Intermodal Programs: What's the Law?Transit and Intermodal Programs: What's the Law?
August 8, 2002
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 50: Legal Aspects of Transit and Intermodal Transportation Programs describes the progress and status of TCRP Project J-5, “Legal Aspects of Transit and Intermodal Transportation Programs,” for which the Transportation Research Board is the agency conducting research.

Learning from Transit Operations in Small and Medium European CitiesLearning from Transit Operations in Small and Medium European Cities
June 10, 2002
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 49: Excellence in Transit Operations in Small and Medium European Cities provides an overview of the European mission focusing on excellence in transit operations in small to medium-sized cities. It is based on individual reports provided by the team members (for a listing of team members, see Appendix A), who are respons...

Synthesis of Information Related to Transit ProblemsSynthesis of Information Related to Transit Problems
April 29, 2002
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 48: Synthesis of Information Related to Transit Problems describes the progress and status of TCRP Project J-7, “Synthesis of Information Related to Transit Problems,” for which the Transportation Research Board is the agency conducting the research.

Germany's Track-Sharing Experiences: Mixed Use of Rail CorridorsGermany's Track-Sharing Experiences: Mixed Use of Rail Corridors
April 29, 2002
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 47: Germany's Track-Sharing Experience: Mixed Use of Rail Corridors summarizes the 12th study mission performed under TCRP Project J-3, “International Studies Program.” The report includes information on the cities visited, lessons learned, and discussions of policies and practices that might be applied in the United Stat...

Supplemental Analysis of National Survey on Contracting Transit ServicesSupplemental Analysis of National Survey on Contracting Transit Services
April 29, 2002
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 46: Supplemental Analysis of National Survey on Contracting Transit Services describes findings from a followon study designed to analyze in greater detail the data obtained from the agency and general manager surveys on contracting conducted as part of the study, “Contracting for Bus and Demand-Responsive Transit Service...

Identification of the Critical Workforce Development Issues in the Transit IndustryIdentification of the Critical Workforce Development Issues in the Transit Industry
April 29, 2002
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 45: Identification of the Critical Workforce Development Issues in the Transit Industry identifies the key workforce challenges facing the public transportation industry, identifies current approaches to addressing those challenges, and suggests an agenda that the public transportation industry can use to move forward in ...

Consensus Standards for the Rail Transit IndustryConsensus Standards for the Rail Transit Industry
December 1, 2001
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 44: Consensus Standards for the Rail Transit Industry provides information on the successful implementation of a comprehensive standards process for the rail transit industry using American National Standards Institute (ANSI) consensus procedures under the aegis of the Institute of Electrical and Electronic Engineers (IEE...

Supplementing and Updating TCRP Report 52: Joint Operation of Light Rail Transit or Diesel Multiple Unit Vehicles with RailroadsSupplementing and Updating TCRP Report 52: Joint Operation of Light Rail Transit or Diesel Multiple Unit Vehicles with Railroads
December 1, 2001
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 43: Supplementing and Updating TCRP Report 52: Joint Operation of Light Rail Transit or Diesel Multiple Unit Vehicles with Railroads supplements and updates TCRP Report 52, “Joint Operation of Light Rail Transit or Diesel Multiple Unit Vehicles with Railroads,” published in May 1999. This digest updates information in TCR...

Technology and Joint Development of Cost-Effective Transit Systems in the Asian Pacific RegionTechnology and Joint Development of Cost-Effective Transit Systems in the Asian Pacific Region
December 1, 2001
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 42: Technology and Joint Development of Cost-Effective Transit Systems in the Asian Pacific Region summarizes the Asian Pacific region mission performed under TCRP Project J-3, “International Transit Studies Program.” The report includes transportation information on the cities and facilities visited, lessons learned, and...

Guidelines for Collecting, Analyzing, and Reporting Transit Crime DataGuidelines for Collecting, Analyzing, and Reporting Transit Crime Data
December 1, 2001
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 41: Guidelines for Collecting, Analyzing, and Reporting Transit Crime Data presents findings about current methods for collecting, analyzing, and using data on transit-related crime to make decisions on personnel deployment and on allocation of security resources. The findings are based on telephone interviews and on info...

Revised Inventory Management Desk GuideRevised Inventory Management Desk Guide
December 1, 2000
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 40: Revised Inventory Management Desk Guide summarizes the results from five case studies conducted and analyzed to determine the relationship between inventory control and management, the conditions under which inventory management techniques are best applied, and the solutions to potential problems when applying the inv...

Alternative-Fuel Transit Bus Hazard Assessment ModelAlternative-Fuel Transit Bus Hazard Assessment Model
December 1, 2000
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 39: Alternative-Fuel Transit Bus Hazard Assessment Model summarizes the findings from TCRP Project C-11, "Hazard Assessment of Alternative-Fuel-Related Systems in Transit Bus Operations."

Operational Analysis of Bus Lanes on Arterials: Application and RefinementOperational Analysis of Bus Lanes on Arterials: Application and Refinement
December 1, 2000
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 38: Operational Analysis of Bus Lanes on Arterials: Application and Refinement analyzes the performance of buses along bus lanes on downtown streets. Additional field observations and measurements were used to test and refine the bus capacity and speed estimating procedures set forth in TCRP Report 26, “Operational Analys...

Synthesis of Information Related to Transit ProblemsSynthesis of Information Related to Transit Problems
December 1, 1999
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 37: Synthesis of Information Related to Transit Problems provides the progress and status of TCRP Project J-7, “Synthesis of Information Related to Transit Problems,” for which the Transportation Research Board is the agency conducting the research.

Highlights of the Transit Capacity and Quality of Service Manual: First EditionHighlights of the Transit Capacity and Quality of Service Manual: First Edition
December 1, 1999
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 35: Highlights of the Transit Capacity and Quality of Service Manual: First Edition and its companion, TCRP Web Document 6, will be of interest to anyone who designs or sponsors transit services. It contains the basic capacity and quality of service concepts for bus service, paratransit services, light rail service, and h...

Light Rail Service: Vehicular and Pedestrian SafetyLight Rail Service: Vehicular and Pedestrian Safety
December 1, 1999
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 34: Light Rail Service: Vehicular and Pedestrian Safety contains information to facilitate the safe, orderly, and integrated movement of all traffic, including light rail vehicles (LRVs), throughout the public highway system, but especially at light rail transit (LRT) crossings. This report is intended to assist those inv...

International Transit Studies Program, Report on the Spring 1998 Mission: Private Urban Transit Systems and Low-Cost Mobility Solutions in Major Latin American CitiesInternational Transit Studies Program, Report on the Spring 1998 Mission: Private Urban Transit Systems and Low-Cost Mobility Solutions in Major Latin American Cities
December 1, 1999
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 33: International Transit Studies Program, Report on the Spring 1998 Mission: Private Urban Transit Systems and Low-Cost Mobility Solutions in Major Latin American Cities summarizes the eighth mission performed under TCRP Project J-3, "International Transit Studies Program" The report includes information on the cities an...

Accessibility of Automated Fare Vending and Collection for Customers with DisabilitiesAccessibility of Automated Fare Vending and Collection for Customers with Disabilities
December 1, 1998
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 32: Accessibility of Automated Fare Vending and Collection for Customers with Disabilities identifies issues of accessibility to automated fare collection and vending machines by transit customers, examines the extent to which these issues arise, and describes solutions that have been implemented or identified as promising.

Trends in Single-Occupant Vehicle and Vehicle Miles of Travel Growth in the United StatesTrends in Single-Occupant Vehicle and Vehicle Miles of Travel Growth in the United States
December 1, 1998
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 30: Trends in Single-Occupant Vehicle and Vehicle Miles of Travel Growth in the United States digest presents key findings from the recently completed TCRP Project H-13B, "Trends in Single-Occupant Vehicle (SOV) and Vehicle Miles of Travel Growth in the United States." The research developed trends and predictions of driv...

Continuing Examination of Successful Transit Ridership InitiativesContinuing Examination of Successful Transit Ridership Initiatives
December 1, 1998
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 29: Continuing Examination of Successful Transit Ridership Initiatives identifies key factors and initiatives that have led to ridership increases at more than 50 transit agencies. This information will be of particular use to transit managers and planners interested in better understanding various mechanisms that have pl...

A Desk Guide for Inventory Managers in the Transit IndustryA Desk Guide for Inventory Managers in the Transit Industry
December 1, 1998
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 28: A Desk Guide for Inventory Managers in the Transit Industry provides the results of TCRP Project E-3, "Desk Guide for Inventory Managers in the Transit Industry." The digest summarizes inventory control techniques appropriate to the transit industry, decision-making techniques, and benchmark references

International Transit Studies Program, Report on the Spring 1997 Mission: Public-Private Partnerships and Innovative Transit Technologies in ScandinaviaInternational Transit Studies Program, Report on the Spring 1997 Mission: Public-Private Partnerships and Innovative Transit Technologies in Scandinavia
December 1, 1998
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 27: International Transit Studies Program, Report on the Spring 1997 Mission: Public-Private Partnerships and Innovative Transit Technologies in Scandinavia summarizes the sixth mission performed under TCRP Project J-3, "International Transit Studies Program " The report includes information on the cities visited, lessons...

Rail Corrugation Mitigation in TransitRail Corrugation Mitigation in Transit
December 1, 1998
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 26: Rail Corrugation Mitigation in Transit identifies and classifies various types of transit rail corrugation and offers possible mitigation measures for each. The body of the digest summarizes the work performed and the resultant findings. More detailed information is provided in the appendixes.

Technology Assessment of Refueling-Connection Devices for CNG, LNG, and PropaneTechnology Assessment of Refueling-Connection Devices for CNG, LNG, and Propane
December 1, 1998
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 25: Technology Assessment of Refueling-Connection Devices for CNG, LNG, and Propane provides an assessment of current and emerging refueling-connection-device (nozzle) technologies (both domestic and international) for fueling alternative fuel vehicles (AFVs). The nozzle technologies discussed in this digest are those use...

Creating a New Future for Public Transportation: TCRP's Strategic Road MapCreating a New Future for Public Transportation: TCRP's Strategic Road Map
December 1, 1998
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 24: Creating a New Future for Public Transportation: TCRP's Strategic Road Map summarizes the findings from TCRP Project J-8A, "New Paradigms for Public Transportation: A Scoping Study. "A future-search conference was held May 12-14, 1997, to identify research that could lead to new paradigms for a better future for publi...

Coordinating Public Transportation with Other Federal ProgramsCoordinating Public Transportation with Other Federal Programs
December 1, 1998
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 23: Coordinating Public Transportation with Other Federal Programs identifies and briefly describes federal programs that can fund passenger transportation for various purposes. Opportunities for coordination of services provided under these programs are discussed and highlighted by case studies of successful coordination...

International Transit Studies Program, Report on the 1996 Missions: Urban and Regional Bus Operations in Smaller European CitiesInternational Transit Studies Program, Report on the 1996 Missions: Urban and Regional Bus Operations in Smaller European Cities
December 1, 1997
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 22: International Transit Studies Program, Report on the 1996 Missions: Urban and Regional Bus Operations in Smaller European Cities summarizes the fourth and fifth missions performed under TCRP Project J-3, "International Transit Studies Program. " The digest includes information on the cities visited, lessons learned, a...

Consequences of the Development of the Interstate Highway System for TransitConsequences of the Development of the Interstate Highway System for Transit
December 1, 1997
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 21: Consequences of the Development of the Interstate Highway System for Transit presents the literature review for TCRP Project H-13A, "Consequences of the Development of the Interstate Highway System." The aim of this project is to determine the effects of the interstate highway system on urban and suburban areas, focus...

International Transit Studies Program: Report on the First Three MissionsInternational Transit Studies Program: Report on the First Three Missions
December 1, 1997
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 20: International Transit Studies Program summarizes the first three missions performed under TCRP Project J-3, "International Transit Studies Program. "Included in this digest are information on the cities visited, summaries of topics investigated, and discussions of policies and practices that could be used in the Unite...

Wheel/Rail Noise MitigationWheel/Rail Noise Mitigation
December 1, 1997
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 19: Wheel/Rail Noise Mitigation describes tools developed to assist engineers responsible for wheel/rail noise control in the design, construction, and operation of rail transit systems.

Public Agency Guidance on Employer-Based TDM ProgramsPublic Agency Guidance on Employer-Based TDM Programs
December 1, 1997
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 18: Public Agency Guidance on Employer-Based TDM Programs describes information collected and guidance developed for use by public agencies and employers interested in implementing employer-based transportation demand management (TDM) strategies to reduce employee reliance on single-occupant vehicles.

Improved Methods for Increasing Wheel/Rail Adhesion in the Presence of Natural ContaminantsImproved Methods for Increasing Wheel/Rail Adhesion in the Presence of Natural Contaminants
December 1, 1997
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 17: Improved Methods for Increasing Wheel/Rail Adhesion in the Presence of Natural Contaminants reviews methods for improving wheel/rail adhesion where railhead contamination by moisture, ice, grease, and leaves and other vegetation has adversely affected operation.

Multipurpose Fare Media: Developments and IssuesMultipurpose Fare Media: Developments and Issues
December 1, 1997
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 16: Multipurpose Fare Media: Developments and Issues presents the interim findings of TCRP Project A-14, "Potential of Multipurpose Fare Media." Included in the digest are (1) a summary of the emerging developments, (2) a discussion of key issues and concerns, and (3) a technical appendix presenting the results of a surve...

Derailment of Transit Vehicles in Special TrackworkDerailment of Transit Vehicles in Special Trackwork
December 1, 1997
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 15: Derailment of Transit Vehicles in Special Trackwork reviews procedures for reducing derailment incidents in special trackwork.

Coordinated Intermodal Transportation Pricing and Funding StrategiesCoordinated Intermodal Transportation Pricing and Funding Strategies
December 1, 1997
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 14: Coordinated Intermodal Transportation Pricing and Funding Strategies provides a summary of TCRP Project H-6, "Transit Fare Pricing Strategy in Regional Intermodal Transportation Systems." Included in the digest are (1) a summary of the key issues and study findings, and (2) several technical appendixes providing key b...

Leveraging Information for Better Transit MaintenanceLeveraging Information for Better Transit Maintenance
December 1, 1997
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 13: Leveraging Information for Better Transit Maintenance summarizes the findings of TCRP Project E-1, "Innovative Maintenance Procedures for Transit Buses."

Transit Risk Manager: Risk Management Software for Bus Transit SystemsTransit Risk Manager: Risk Management Software for Bus Transit Systems
December 1, 1997
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 12: Transit Risk Manager: Risk Management Software for Bus Transit Systems describes a new software product developed under TCRP Project G-3, "Tools for Transit Risk-Exposure Identification and Treatment for Bus Transit Systems. This software product, called Transit Risk Manager, is a PC-based, user-friendly, menu-driven,...

Guidelines for the Consistent Collection, Categorization, and Dissemination of Bus Transit Loss DataGuidelines for the Consistent Collection, Categorization, and Dissemination of Bus Transit Loss Data
December 1, 1997
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 11: Guidelines for the Consistent Collection, Categorization, and Dissemination of Bus Transit Loss Data provides the results of Task 6 of TCRP Project G-3, "Tools for Transit Risk-Exposure Identification and Treatment for Bus Systems." The digest offers guidelines for the consistent collection, categorization, and dissem...

Integrating Americans with Disabilities Act Paratransit Services and Health and Human Services TransportationIntegrating Americans with Disabilities Act Paratransit Services and Health and Human Services Transportation
December 1, 1997
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 10: Integrating Americans with Disabilities Act Paratransit Services and Health and Human Services Transportation explains the impact of the implementation of ADA paratransit requirements on public and human services transportation, presents an overview of federal and state coordination activities, and summarizes selected...

Responding to Vandalism of Transit Bus and Rail Vehicle Passenger WindowsResponding to Vandalism of Transit Bus and Rail Vehicle Passenger Windows
December 1, 1996
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 9: Responding to Vandalism of Transit Bus and Rail Vehicle Passenger Windows summarizes of findings from TCRP Project C-4, "Enhancement of Vehicle Window Glazing for Vandal Resistance and Durabilit.," Included in the digest are brief descriptions of current and emerging methods available to address the passenger window va...

Synthesis of Information Related to Transit ProblemsSynthesis of Information Related to Transit Problems
December 1, 1995
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 8: Synthesis of Information Related to Transit Problems describes the progress and status of TCRP Project J-7, "Synthesis of Information Related to Transit Problems," for which the Transportation Research Board is the agency conducting the research.

An Evaluation of the Relationships Between Transit and Urban FormAn Evaluation of the Relationships Between Transit and Urban Form
December 1, 1995
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 7: An Evaluation of the Relationships Between Transit and Urban Form summarizes the results of Phase I of TCRP Project H-I, "An Evaluation of the Relationships Between Transit and Urban Form." The objectives of this phase were to 1) review the existing literature on transit and urban form relations, 2) develop a framework...

Research Agenda for Increasing Transit RidershipResearch Agenda for Increasing Transit Ridership
December 1, 1995
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 6: Research Agenda for Increasing Transit Ridership summarizes TCRP Project H-5, "National Workshop to Develop a Research Agenda for Increasing U.S. Transit Ridership." The objective of the workshop was to develop problem statements for research on increasing transit ridership.

Electronic On-Vehicle Passenger Information Displays (Visual and Audible)Electronic On-Vehicle Passenger Information Displays (Visual and Audible)
December 1, 1995
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 5: Electronic On-Vehicle Passenger Information Displays (Visual and Audible) provides the interim results of TCRP Project A-4, "Electronic On-Vehicle Passenger Information Displays (Visual and Audible)." The project explores ways in which transit agencies and transit users can benefit from on-board audio and visual displa...

Transit Ridership InitiativeTransit Ridership Initiative
December 1, 1994
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 4: Transit Ridership Initiative identifies and reports on transit ridership success stories and identifies research needs to increase U.S. transit ridership.

Total Quality Management in Public TransportationTotal Quality Management in Public Transportation
December 1, 1994
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 3: Total Quality Management in Public Transportation presents research on Total Quality Management (TQM) in the private and public sectors and in the U.S. public transportation industry.

Synthesis of Information Related to Transit ProblemsSynthesis of Information Related to Transit Problems
December 1, 1994
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 2: Synthesis of Information Related to Transit Problems describes the new Transit Cooperative Research Program.

Transit Operations for Individuals with DisabilitiesTransit Operations for Individuals with Disabilities
December 1, 1994
TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 1: Transit Operations for Individuals with Disabilities provide information on available options and enhancements that will allow transit providers to improve the effectiveness and efficiency of services to persons with disabilities.
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