Public transportation access and quality
Strategy overview
Linking residents to services and opportunities: The availability of quality public transportation directly impacts the ability of residents to access the services and opportunities they need to improve their wellbeing and economic outcomes. While the positive link between transit access and employment outcomes is well established, quality public transportation remains vital for a range of other purposes, including accessing educational opportunities, healthcare, child care, social activities, and more. This is particularly true for the nearly one-third of US residents who are non-drivers, a group that includes a disproportionate number of low-income, disabled, young, and elderly individuals.
Creating community-level impacts: At the same time, increasing public transit ridership presents several benefits that go beyond the individual. The public health benefits of public transportation are well-documented, with increased transit use linked to improved air quality, increased physical activity, and fewer traffic collisions, among others. As transportation is the single largest source of direct greenhouse gas emissions in the United States, public transportation is also key for communities aiming to reduce carbon emissions.
Balancing ridership and coverage: The most fundamental tradeoff that transit agencies face is choosing between operating a network that prioritizes reaching the largest geographic area or one that prioritizes generating the highest ridership. The degree to which ridership or coverage should be prioritized is dependent on a community’s goals. At the same time, many of the environmental, population health, and economic benefits of public transportation scale with increased ridership. As such, this strategy guide broadly covers how transit agencies and their local partners can increase transit ridership while highlighting the contexts in which prioritizing coverage may be most important, such as when doing so can promote social equity goals.
Pulling internal levers to increase ridership: The most important factor for increasing transit ridership that is directly under the control of transit agencies is service frequency. Other internal factors, including improved service reliability and reduced fare prices, are also associated with increased ridership. The strategies that will be most effective at increasing ridership will depend on local context. However, broadly applicable approaches to increasing ridership include shifting network design to favor frequent routes with fewer diversions, designing roadways to improve transit speed and reliability, and offering targeted free- or reduced-fare programs for groups that need them most. Ultimately, to increase ridership, transit agencies need to adopt strategies that attend to the range of internal factors that impact how, when, and where customers travel – with frequency, reliability, and fare policy being among the most important.
Improving safety – and perceptions of safety – on transit: Safety on public transportation meaningfully affects transit ridership. Maintaining public safety requires collaboration between transit agencies, police departments, social service agencies, and other stakeholders. While law enforcement may be effective at addressing serious safety concerns, most safety issues on public transportation are minor – such as fare evasion or code of conduct violations. Early evidence suggests that holistic solutions that limit the role of law enforcement when conducting fare enforcement and addressing minor code of conduct violations may be most effective for furthering safety and equity goals (e.g., using unarmed customer service and social service personnel).
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Aligning external factors to support transit over the long-run: Key external factors associated with transit ridership include the type of land use and the rate of car ownership around transit routes and across a region. While transit agencies can design their networks to prioritize service to areas with transit-supportive land uses and/or lower rates of car ownership, they do not have direct control over broader regional trends in these factors. As such, city and county governments can be key partners in encouraging compact, walkable, and mixed-use development over the long-run. Revising zoning codes and building regulations to allow, encourage, or require dense and mixed-use development along key transit corridors represents a major lever for local governments to support public transportation. Development incentives, like tax abatements and expedited permitting processes, can also be leveraged to encourage transit-supportive development.
Multiple, high-quality studies show that improving the frequency of transit service is the most significant internal factor for increasing public transportation ridership. The research also consistently identifies fare prices and service reliability as significant but secondary factors in determining ridership. Multiple factors outside the control of transit agencies, such as car ownership, also impact transit ridership, with the presence of transit-supportive land use (i.e., higher population and job density), representing a factor partially under the control of city and county governments.
A 2022 quantitative study of pre-pandemic ridership declines identified increased transit service as the most significant internal factor for transit agencies to increase ridership. The study also identified dense land use as a strong predictor of transit ridership.
A 2018 quantitative study found that transit service frequency and rates of vehicle ownership best predicted changes in transit ridership across 25 North American cities over a 13-year period.
A 2023 research report found that free- and reduced-fare programs are likely to increase transit ridership, particularly among low-income riders. However, the report notes that, on average, ridership will increase more for each dollar spent to improve transit service than for each dollar used to reduce fares.
A 2020-2021 survey and study identified service hubs, mobile outreach, discounted fare programs, and transport to social services and shelters as key strategies adopted by transit agencies to address homelessness. Based on the limited evidence currently available, the report recommends hiring dedicated, non-law enforcement staff to conduct outreach to unhoused riders; developing strong partnerships with external social service providers; and focusing conduct policies on antisocial behaviors instead of unhoused riders as a group as emerging best practices.
Both a 2022 study from Charlotte (NC) and a 2015 study from Los Angeles (CA) found that increased transit service reliability was positively associated with increased ridership, particularly during weekday peak hours.
Before making investments in this strategy, city and county leaders should ensure it addresses local needs.
The Urban Institute and Mathematica have developed indicator frameworks to help local leaders assess conditions related to upward mobility, identify barriers, and guide investments to address these challenges. These indicator frameworks can serve as a starting point for self-assessment, not as a comprehensive evaluation, and should be complemented by other forms of local knowledge.
The Urban Institute's Upward Mobility Framework identifies a set of key local conditions that shape communities’ ability to advance upward mobility and racial equity. Local leaders can use the Upward Mobility Framework to better understand the factors that improve upward mobility and prioritize areas of focus. Data reports for cities and counties can be created here.
Several indicators in the Upward Mobility Framework may be improved with investments in public transportation access. To measure these indicators and determine if investments in these interventions could help, examine the following:
Access to transportation: Indexes for transit trips and transportation costs. These estimates are available from the Department of Housing and Urban Development’s Location Affordability Index.
Environmental quality: Examine air quality. These data are available from the Environmental Protection Agency’s Air Quality Index.
Safety from trauma: Number of deaths due to injury per 100,000 people. These data are available from the National Center for Health Statistics’ Mortality File and the CDC’s WONDER database.
Mathematica's Education-to-Workforce (E-W) Indicator Framework helps local leaders identify the data that matter most in helping students and young adults succeed. Local leaders can use the E-W framework to better understand education and workforce conditions in their communities and to identify strategies that can improve outcomes in these areas.
One indicator in the E-W Framework may be improved with investments in this strategy. To measure this indicator and determine if investments in this strategy could help, examine the following:
Access to transportation: Average commute time to work, school, or college or The Low Transportation Cost Index, from the U.S. Department of Housing and Urban Development.
Navigating the trade-off between ridership and coverage: When designing a network to encourage ridership, transit agencies concentrate a smaller number of more frequent routes along the streets that are most supportive of transit (e.g., with dense land use and pedestrian-oriented design). In contrast, when designing for coverage, transit agencies create a larger network of less frequent routes that provide at least some service to the most people. As all transit agencies face this tradeoff, communities should aim for consensus on how their transit agency should address these competing goals (see Human Transit’s resource). While both approaches have benefits, experts generally advise that transit agencies prioritize providing service to areas that either (1) support high ridership or (2) have a high proportion of households without access to a vehicle. To the extent that it is politically feasible, agencies should deprioritize service to areas with auto-oriented land use and relatively high car ownership, except when transit can provide a clear time advantage over driving.
Serving trips outside of the traditional “9-to-5” commute: Since the height of the COVID-19 pandemic, public transit ridership has rebounded to between 70-80 percent of pre-pandemic levels. However, early indicators suggest that this rebound may be the result of ridership growth during nights and weekends and on routes linking residential and commercial areas. In contrast – and in a reversal of its pre-pandemic strength – ridership on traditional 9-to-5 commuter service has been slower to recover. Many office workers, to whom this service is typically targeted, continue to work from home. As such, transit agencies should assess whether improving service to non-office destinations and during early-morning, late-night, and weekend hours would better match current travel patterns in their service area. If so, allocating more resources to these service types may be an effective strategy for increasing ridership.
Adopt street design and transit operations practices to increase speed and reliability: Transit agencies can unlock higher service frequencies by speeding up their buses or trains, allowing them to provide more frequent service with the same number of vehicles. Fortunately, at least in urban contexts, the same strategies that speed up buses typically increase their reliability as well, making these strategies especially potent for increasing ridership. Effective approaches for increasing speed and reliability include transit signal priority, greater distance between stops, and dedicated transit lanes. However, as street design is generally controlled by municipal or state governments, implementing these strategies requires collaboration between transit agencies and municipal and/or state transportation officials. For detailed street design and transit operations recommendations for increasing bus speed and reliability, see NACTO’s Transit Street Design Guide.
Setting fares based on agency goals and using targeted fare subsidies: Generally, experts advise that transit agencies should retain fares as a revenue source and use targeted free- or reduced-fare programs for groups that need them most (e.g., seniors, low-income riders). Recently, increased attention has been given to transit agencies that have gone “fare-free” – such as RideKC and Sun Tran. While this approach may be appropriate in communities in which the loss of fare revenue would have minimal to no impact on service capacity, for most transit agencies, the lost revenue could result in service cuts. As transit riders – including low-income riders – tend to be more sensitive to service quality than fare price, agencies interested in increasing ridership will likely benefit more from reinvesting fare revenue into service provision than in offering fare-free transit. Advocating for new funding sources (such as greater tax subsidies from other levels of government), though, can avoid creating a zero-sum choice and help transit agencies fund both service improvements and fare reductions.
Taking a holistic approach to addressing safety concerns: If riders do not feel safe on public transportation, ridership will likely decline. Traditionally, transit agencies have relied on law enforcement to ensure safety. While police may be effective at addressing violent crime and other serious safety concerns, a more holistic approach is recommended when conducting fare enforcement or addressing minor violations. Broadly, experts agree that unarmed customer service and social welfare personnel are better situated to deal with low-level offenses than law enforcement officers (see TransitCenter’s Safety for All guide). Similarly, when safety or conduct issues involving unhoused riders arise, strategies including social service hubs, mobile outreach teams, discounted fare programs, and connectivity to social service agencies and shelters may prove effective (see the UCLA Institute for Transportation Studies’ reports).
Developing effective rider-facing communication tools: While empirical evidence is limited, experts advise that a transit agency’s ability to communicate with the public meaningfully impacts the public’s perception of – and likelihood of using – transit service. One communication strategy linked to increased ridership is the provision of real-time arrival information for transit vehicles, typically through a mobile application.
Partner with city and county governments to encourage transit-supportive land use: Land use patterns are among the greatest factors determining a transit network’s ridership. When land use along transit corridors is compact, walkable, and contains a variety of destinations (e.g., a mix of residential, commercial, and community uses), transit is more convenient, and more people will choose it over other travel modes. While transit agencies must provide service “now,” they can partner with other local governments to encourage more transit-supportive development in the long-run. In particular, cities and counties can revise their zoning codes and building regulations to allow, encourage, or require compact, mixed-use development near transit. Development incentives, like tax abatements and expedited permitting processes, can also be leveraged to encourage transit-supportive development. Finally, for transit agencies with surplus parking around key transit nodes, these properties may represent opportunities for transit-oriented development, particularly as recent shifts in commuting patterns have reduced the need for park-and-ride facilities in many communities.
Assess whether network design serves equity goals: Transit agencies have a variety of competing and often contradictory goals. They may face pressure to allocate service evenly across their region, particularly when agencies receive funding from residents and municipalities throughout their region. However, allocating service evenly across geography may not best serve those who rely on and use transit the most. As such, when politically feasible, transit agencies should prioritize service to areas with transit-supportive land use and low levels of car ownership. Those who rely on transit also need quality service for non-commuting trips (e.g., running errands) and during off-peak times, so ensuring reasonably frequent service for these trips should also be a priority.
Examine fare enforcement practices and penalties for fare evasion: In many transit systems, law enforcement officers have traditionally conducted fare enforcement. This approach has come under increased scrutiny given the history of violent interactions between police officers and riders. As such, experts advise that unarmed customer service and social welfare personnel are generally better situated to conduct fare enforcement than law enforcement officers. Also of concern are penalties for fare evasion, which are often out of proportion to the violation. Not paying a parking meter, for comparison, is not a criminal offense. Steep financial penalties, in particular, can disproportionately harm low-income riders and riders of color. To address these concerns, transit agencies may consider decriminalizing or lowering fines for fare evasion, offering reduced fines or payment plans for low-income individuals, or creating an alternative to paying a fine for resolving a citation, like community service. (see TransitCenter’s Safety for All report.) At the same time, agencies can “harden” their systems to prevent fare evasion through infrastructure, such as taller fare gates or “tap-to-exit” programs.
Allocate funding, road space, and signal priority to benefit target populations: Transit agencies should examine whether the way they allocate their budgets advances their goals around equity. For example, spending on dedicated bus lanes may benefit riders who rely on transit more than extending commuter rail service deeper into suburban communities. That said, transit funding is often inflexible, and it may not always be possible to shift funds to meet an agency’s equity goals. City, county, and state governments should also examine how space and priority are allocated on roads used for transit service (e.g., physical space, traffic signal priority). Since transit moves people more efficiently than individual motor vehicles, by advocating for road designs that prioritize transit, local leaders can move more total people and improve the quality of transit service, benefiting both riders who rely on transit and the public more broadly.
Agency senior management and board members: Senior transit agency leaders make high-level decisions around service provision and resource allocation. These leaders play a key role in setting an agency’s vision and advocating for support from other local leaders and state and federal government partners. Depending on a transit agency’s board structure, it may be advantageous to recruit board members with connections to key funders, like state legislative bodies or departments of transportation.
City and county governments: City and county governments typically manage the design and build out of the roads on which transit operates. As such, city and county public works and engineering staff are key partners for transit agencies interested in changing roadway designs and traffic signalization to better support transit. Similarly, local planning staff can be key partners to transit agencies in ensuring long-range land use planning encourages transit-supportive development.
State government: State governments are often key funders for transit agencies, though the amount of financial support states provide for public transportation varies widely. In limited cases, state department of transportation staff may be key partners in designing state-owned roadways to better serve transit.
Labor representatives: Typically, a significant portion of a transit agency’s staff are unionized, notably operators and mechanics. As in other government contexts, policy changes need to be socialized with labor leaders to build buy-in. Additionally, as an agency’s unionized staff are typically front-line staff, they can be a key source of feedback on how prospective policy changes may affect operations. Labor shortages during the pandemic proved that, rather than a trade-off, spending on labor may go hand in hand with improving service. As one example, higher pay and improved benefits can prevent vacancies that led to canceled service across the country.
Transit riders groups: Transit riders are a key constituency for transit agencies. Riders can provide insightful feedback on an agency’s service and can serve as advocates on behalf of the agency, both to non-riders and to outside government leaders. However, accurately assessing rider sentiment and leveraging rider support to conduct advocacy can be challenging. Both internal riders advisory councils and external riders advocacy groups can assist agencies in better understanding and acting upon rider perspectives.
Neighborhood-level representatives: While transit agencies typically provide service at a regional scale, transit agency decisions can have hyper-local impacts. Neighborhood-level representatives, like city council members and place-based organizations (e.g., a business improvement district), can serve as liaisons to area residents. These partners can help disseminate information on behalf of a transit agency, as well as serve as conveners, bringing community members to the table to provide feedback to an agency.
Identify and communicate the purpose of community engagement: Community engagement activities can be conceptualized along a continuum from informing the public to empowering it to make decisions (see IAP2’s Spectrum of Public Participation). Experts recommend that transit agencies use a framework for identifying the engagement activities most appropriate for any given outreach campaign. Using a community engagement framework supports agency staff in clarifying the public’s role and the extent of the public's influence in a project or service change. Clearly setting these expectations with community members can build greater trust between the transit agency and the general public. Likewise, staff should recognize that those who live near a proposed transit project may not be the same people who will use that project to travel through the area and should conduct outreach appropriately.
Use quick-builds to improve service and address opposition to long-term projects: Transit agencies and their local government partners should consider using low-cost, “quick-build” strategies to rapidly improve transit service along key corridors (e.g., designating bus lanes with paint and signage). This approach allows agencies to make significant improvements to service even when funding for larger-scale capital improvements is limited. Separately, quick-build installations can serve as temporary pilot projects to test and iterate on a roadway design before a more significant investment is made, especially when a proposed change is controversial. As pilots give community members the opportunity to experience an intervention before it is made permanent, they can be an important strategy for building support for controversial projects.
Ensuring a strong transit workforce: Across the country, transit agencies are experiencing difficulty recruiting and retaining employees – with critical roles, like bus operators and mechanics, often being the most difficult to fill. In many cases, such workforce shortages have forced transit agencies to either cut service or delay service expansions. Ultimately, a stable workforce is fundamental to a transit agency’s ability to deliver on its strategies to increase ridership. For more guidance, see TransitCenter’s Bus Operators in Crisis and Developing Transit Talent Pipelines guides.
Securing additional funding to support improved service: While transit agencies can pull operational levers to increase ridership at their existing funding levels, substantially increasing ridership typically requires additional funding. Many transit agencies benefit from dedicated sales or property tax revenue authorized by local referendums. In recent years, local ballot measures to renew or increase funding for transit agencies have often been successful. In a minority of states, transit agencies receive significant state funding. Particularly in states that dedicate little funding to public transportation, transit agencies should consider whether advocating for a greater share of state transportation dollars may be successful. Lastly, cities and counties may directly support their transit agency by purchasing additional service on select routes (a practice called “service buy-ups”). Cultivating these alternative funding sources will be particularly important for transit agencies as federal aid tied to the COVID-19 pandemic ends and the scale of future federal support for public transportation remains in flux.
Ridership: Ridership, frequently measured as unlinked passenger trips (i.e., each time a passenger boards a vehicle), is among the most important metrics for a transit agency. While meaningful in aggregate, this metric is most useful when disaggregated by day, time, route, and direction. With these data, transit agencies and their partners can better understand who is using which service and where they are going. To gain a deeper understanding of rider travel patterns, agencies could utilize anonymized cell phone data or rider surveys as a supplement.
Reliability: A common metric for reliability is on-time performance, which is typically operationalized as the proportion of stop or station arrivals that occur within a set buffer around their scheduled arrival times (e.g., within 5 minutes). To assess the role of vehicle maintenance on reliability, agencies may also track the mean distance between vehicle failures. Finally, agencies may use customer satisfaction surveys to assess riders’ perceptions of service reliability. These metrics are valuable, as reliability is directly linked to both rider experience and overall transit ridership.
Safety: To measure safety on transit, many agencies have traditionally used crime and/or security incident rates per passenger boardings. While these data are typically easily accessible, they should be interpreted with caution, as crimes on transit often go unreported (especially sexual harassment). When possible, agencies may supplement these data with rider surveys that measure feelings of safety on transit. To the extent possible, these data should be collected with demographic data, as different social groups experience safety on transit differently.
Customer satisfaction: Transit agencies typically measure customer satisfaction through regular surveys of riders. These data are most useful when broken down by service type (e.g. bus, paratransit, rail). Agencies may also use the number of complaints (generally normalized per passenger boarding during a given period) as a measure of customer satisfaction, though this approach may be less representative of overall rider satisfaction.
Financial performance: Operating costs per unlinked passenger trip is a common measure of financial performance for transit agencies. Broken down by route, this metric can help transit agencies and their partners identify the routes that make efficient use of agency resources. While it has limitations, the farebox recovery ratio – calculated by dividing fare revenue by operating expenses – can be used in a similar way. In both cases, what a “good” ratio looks like depends on the transit agency’s goals. For routes designed to increase ridership, lower operating costs per unlinked passenger trip and higher farebox recovery ratios would be expected. In contrast, on coverage routes, which require greater subsidies, agencies should expect the inverse
Resources
Evidence-based examples
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Outcome Area |
This ranking reflects how these approaches are scored in one of the major government- or philanthropy-led clearinghouse resources. For more: https://catalog.results4americ... |
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Improvements to streets and roads that seek to make them more inclusive, accessible, and safe for all users
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Supportive neighborhoods Stable and healthy families |
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Reimbursements, discounts, pretax deductions, and more to encourage and enable individuals to use public transportation
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Supportive neighborhoods High-quality employment |
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Contributors
Jacob Wasserman
Jacob Wasserman studies and manages research on public transit, the intersection of transportation and other social issues, and a range of mobility questions at UCLA Institute of Transportation Studies. With a background in transportation equity, finance, and demand management, Wasserman serves as the lead scholar of ITS’ Public Transit research program.
Claire Q. Evans
Claire Evans is a social science researcher and analyst at King County Metro Transit (WA). As a member of the Research Team, Claire supports the design and implementation of research efforts across Metro.
David King
David King is an Associate Professor at ASU’s School of Geographical Sciences and Urban Planning. He researches the codependence of transportation and land use planning along with transportation finance and economics.
Carrie S. Cihak
As Evidence and Impact Officer for King County (the 12th most populous county in the United States), Carrie is responsible for developing partnerships that help county agencies evaluate the impact of their work, advance equity, and improve results for residents. She previously led learning and impact for King County Metro Transit and was Chief of Policy for King County Executive Dow Constantine.
Adie Tomer
Adie Tomer is a Senior Fellow at Brookings Metro, and is an expert in infrastructure policy and urban economics, with a particular focus on transportation and digital technology issues.