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Transit Cooperative Research Program (TCRP) Synthesis Reports

Syntheses report on the state of the practice based on literature reviews and surveys of recent activities in critical areas. Syntheses also inform transit managers about innovations being used by others to solve problems.

On-Street Bus Operations Management On-Street Bus Operations Management
TCRP Synthesis 166
December 16, 2022
New technologies, especially automatic vehicle location (AVL) systems, provide much more real-time information on bus locations than had previously been available. Theoretically, availability of this information can be expected to improve the efficiency and effectiveness of on-street bus operations management. The TRB Transit Cooperative Research Program's TCRP Synthesis 166: On-Street Bus Operati...

Customer Education and Awareness of On-Demand Mobility Customer Education and Awareness of On-Demand Mobility
TCRP Synthesis 165
January 19, 2023
For transit agencies launching new on-demand services that are different from typical fixed route or demand-responsive routes, there can be issues in customer awareness of the service or comfort level with using it for travel. The TRB Transit Cooperative Research Program's TCRP Synthesis 165: Customer Education and Awareness of On-Demand Mobility documents current practices in how on-demand servic...

Bus Rapid Transit: Current State of Practice Bus Rapid Transit: Current State of Practice
TCRP Synthesis 164
May 27, 2022
Bus rapid transit (BRT) and BRT light continue to interest transit agencies in the United States, and these agencies continue to struggle with many facets that go into the implementation of BRT operations, infrastructure, and services. The TRB Transit Cooperative Research Program's TCRP Synthesis 164: Bus Rapid Transit: Current State of Practice documents the current practices and lessons learned ...

Considering the Unbanked in Cashless Fare Payment at Point of Service for Bus/Demand-Response Services Considering the Unbanked in Cashless Fare Payment at Point of Service for Bus/Demand-Response Services
TCRP Synthesis 163
May 19, 2022
In recent years, many transit systems have been considering the benefits and challenges of moving to completely cashless fare payments and trying to find innovative solutions to help all their customers. The TRB Transit Cooperative Research Program's TCRP Synthesis 163: Considering the Unbanked in Cashless Fare Payment at Point of Service for Bus/Demand-Response Services is designed to help inform...

Coordination of Public Transit Services and Investments with Affordable Housing Policies Coordination of Public Transit Services and Investments with Affordable Housing Policies
TCRP Synthesis 162
March 23, 2022
The nexus of transit with affordable housing, in some ways, is fundamental to transit’s very existence. Public transit provides a lower-cost mobility option for those who cannot or do not have a personal automobile to access regional destinations, including jobs, schools, and essential services. The TRB Transit Cooperative Research Program's TCRP Synthesis 162: Coordination of Public Transit Servi...

ADA Paratransit and Other Demand-Responsive Transportation Services in Small to Midsized Transit Agencies ADA Paratransit and Other Demand-Responsive Transportation Services in Small to Midsized Transit Agencies
TCRP Synthesis 161
February 23, 2022
ADA paratransit demand continues to grow while resources are dwindling. Because of this, transit agencies continue to explore models to more effectively meet the demand. The TRB Transit Cooperative Research Program's TCRP Synthesis 161: ADA Paratransit and Other Demand-Responsive Transportation Services in Small to Midsized Transit Agencies explores paratransit delivery models for small and midsiz...

Fare Capping: Balancing Revenue and Equity Impacts Fare Capping: Balancing Revenue and Equity Impacts
TCRP Synthesis 160
February 25, 2022
Transit agencies in the United States are beginning to experiment with fare caps to ensure that passengers who pay for single rides do not pay more than multiple-ride passes included in their fare structure. The TRB Transit Cooperative Research Program's TCRP Synthesis 160: Fare Capping: Balancing Revenue and Equity Impacts includes a review of the literature; a survey of 35 North American transit...

Assessing Equity and Identifying Impacts Associated with Bus Network Redesigns Assessing Equity and Identifying Impacts Associated with Bus Network Redesigns
TCRP Synthesis 159
February 07, 2022
Numerous transit agencies, of all sizes, have undertaken bus network redesigns across the United States and Canada over the past decade. The importance of incorporating equity considerations in the planning process is an emerging topic that is rapidly evolving, especially since 2020. The TRB Transit Cooperative Research Program's TCRP Synthesis 159: Assessing Equity and Identifying Impacts Associa...

Cybersecurity in Transit Systems Cybersecurity in Transit Systems
TCRP Synthesis 158
January 26, 2022
The COVID-19 pandemic is having a profound effect on every infrastructure sector in North America, including transit systems, and on the information technology and operational technology systems that are embedded in their ongoing operations. The TRB Transit Cooperative Research Program's TCRP Synthesis 158: Cybersecurity in Transit Systems identifies and documents emerging cybersecurity trends rel...

Transit Safety Risk Assessment Methodologies Transit Safety Risk Assessment Methodologies
TCRP Synthesis 157
December 31, 2021
Risk management is the central element of the safety management system (SMS). Identifying, assessing, analyzing, mitigating, communicating, and documenting are all steps in an effective risk management program. The TRB Transit Cooperative Research Program's TCRP Synthesis 157: Transit Safety Risk Assessment Methodologies is designed to help the transit industry better understand current and new in...

Uses of Social Media in Public Transportation Uses of Social Media in Public Transportation
TCRP Synthesis 156
January 03, 2022
A high percentage of transit agencies believe social media is important for increasing ridership, improving customer satisfaction, and improving agency image. The TRB Transit Cooperative Research Program's TCRP Synthesis 156: Uses of Social Media in Public Transportation updates 2012's TCRP Synthesis 99: Uses of Social Media in Public Transportation and again explores the use of social media among...

Intelligent Transportation Systems in Headway-Based Bus Service Intelligent Transportation Systems in Headway-Based Bus Service
TCRP Synthesis 155
April 30, 2021
Intelligent transportation systems and, in particular, computer-aided dispatch and automatic vehicle location (CAD/AVL), have become quasi-universal in urban bus operations and support a variety of functions. The TRB Transit Cooperative Research Program's TCRP Synthesis 155: Intelligent Transportation Systems in Headway-Based Bus Service synthesizes the current state of the practice of headway-bas...

Innovative Practices for Transit Planning at Small to Mid-Sized Agencies Innovative Practices for Transit Planning at Small to Mid-Sized Agencies
TCRP Synthesis 154
May 26, 2021
Diverse small and mid-sized transit agencies are very interested in finding solutions for their transit planning challenges. They will benefit from seeing how similar agencies deal with their transit service issues. Large transit agencies could also apply what is learned to sub-areas in their transit service area that are comparable to the service area of a small or mid-sized transit agency. The T...

The Transit Analyst Toolbox: Analysis and Approaches for Reporting, Communicating, and Examining Transit Data The Transit Analyst Toolbox: Analysis and Approaches for Reporting, Communicating, and Examining Transit Data
TCRP Synthesis 153
April 01, 2021
Today, transit agencies gather and manage more data than ever. However, data processing, exploration, the development of performance metrics, and communicating decisions are often fragmented and scattered across many departments. The TRB Transit Cooperative Research Program's TCRP Synthesis 153: The Transit Analyst Toolbox: Analysis and Approaches for Reporting, Communicating, and Examining Transi...

Transit Agency Relationships and Initiatives to Improve Bus Stops and Pedestrian Access Transit Agency Relationships and Initiatives to Improve Bus Stops and Pedestrian Access
TCRP Synthesis 152
May 13, 2021
In the United States, many transit stops are not adequate: bus stops that are just a signpost on a busy road, bus stops with broken sidewalks and/or pathway obstructions, bus stops with a lack of seating, and bus stops clearly not accessible to people with disabilities. For many bus riders, the journey to access and the wait at the bus stop are experiences that may inhibit their ability or desire ...

Maintenance Planning for Rail Asset Management—Current Practices Maintenance Planning for Rail Asset Management—Current Practices
TCRP Synthesis 151
December 02, 2020
The occurrence of rail defects, broken rails, and broken rail derailments is consistent with the rate of development found in other studies that look at larger populations of rail defects. Likewise, the larger and more heavily used transit systems develop increased levels of defects, which is again consistent with what is seen in the railroad industry at large. The TRB Transit Cooperative Research...

Third Rail Insulator Failures: Current State of the Practice Third Rail Insulator Failures: Current State of the Practice
TCRP Synthesis 150
November 30, 2020
Third rail systems provide traction power to electrified rail systems in many parts of the world, including the United States, and encounter problems such as failures that need to be investigated and remediated. The TRB Transit Cooperative Research Program's TCRP Synthesis 150: Third Rail Insulator Failures: Current State of the Practice  documents the present practices and lessons learned, c...

Transit Signal Priority: Current State of the Practice Transit Signal Priority: Current State of the Practice
TCRP Synthesis 149
May 20, 2020
Public transit buses face many operational challenges—especially when operating on the same streets and roads as other vehicles. Buses can be slowed by traffic congestion and get repeatedly caught at traffic lights, slowing buses down and delaying both passengers on board and passengers waiting at stops farther along the route. The TRB Transit Cooperative Research Program's TCRP Synthesis 149: Tra...

Business Models for Mobile Fare Apps Business Models for Mobile Fare Apps
TCRP Synthesis 148
April 29, 2020
Five different business models for mobile fare payment apps are examined, as the world of apps used by transit agencies in the United States and Canada continues to steadily grow. The TRB Transit Cooperative Research Program's TCRP Synthesis 148: Business Models for Mobile Fare Apps documents current practices and experiences of transit agencies that offer mobile fare payment applications to trans...

Attracting, Retaining, and Advancing Women in Transit Attracting, Retaining, and Advancing Women in Transit
TCRP Synthesis 147
March 11, 2020
Women have traditionally been underrepresented within the transit workforce. However, the percentage of women within transit agencies appears to be increasing, and many transit agencies report that the percentage of women advancing into management and leadership positions has also been increasing over the past 5 years. The TRB Transit Cooperative Research Program's TCRP Synthesis 147: Attracting, ...



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