The U.S. freight rail network is a private industry that moves about 40 percent of U.S. freight across about 140,000 miles of track. Freight railroads are responsible for the safety of their trains, tracks, and personnel. These railroads rely on their revenues for funding to perform track inspections and maintenance. Close to 600 freight railroads operate in the United States, and they are divided into three classes according to revenues. The seven Class I freight railroads, those with approximately $447.6 million or more in annual revenue over 3 consecutive years, account for more than 90 percent of the annual revenues of the railroad- freight industry and employ 90 percent of railroad employees. Class I freight railroads move freight over long-haul routes and face competition from each other and from other freight-shipping modes, such as trucks and barges. Class II and III railroads tend to operate over much smaller geographic areas than Class I railroads and employ fewer people. Trains operate on different types of train tracks, including main line tracks—the primary rail arteries trains use to travel—and sidings, which are primarily auxiliary tracks for trains to pass one another. Trains can be stored, sorted, and assembled in railyards. Railroads use main line and sidings to enable trains to enter and leave the yard. Outside railyards, some sections of main line track have sidings that lead to a parallel set of rails to allow trains to pass one another. In addition, some portions of main line track consist of two or more parallel sets of track to allow trains to pass one another or travel in opposite directions. See figure 1 for an illustration of different track types and siding. Train makeup refers to the placement of individual railcars that make up a train. A typical train consists of a locomotive—the power and control unit where the train operator sits at the front of the train—followed by connected railcars. The lead locomotive pulls the train and provides control for other functions, including braking. Freight trains carry a variety of freight using different types of railcars that vary in capacity, length, and weight. When assembling a train, railroads consider a variety of factors— such as each car’s weight, length, freight, and whether it is loaded or empty—when determining its position in the train. Train make up is also dependent on external conditions, such as variations in terrain and weather conditions. Railroads can place radio-controlled locomotives, called distributed power (DP) units, throughout trains to spread out pulling and pushing power, which we discuss in more detail below. Proper train makeup is critical for ensuring a train is able to effectively negotiate track and prevent derailment, according to FRA. Improperly assembled trains are more susceptible to derailment, in part because of vertical, longitudinal, and lateral forces throughout the train—also known as “in-train” forces—that can affect the stability of a train on its tracks, depending on a variety of factors, including the train’s speed and terrain. For example, excessive “in-train” forces can cause a long, heavy train to pull apart or climb off the track upon a change of grade (e.g., going up or down hills) or when the train enters a curve. “Unit trains”—which carry a single commodity, such as coal or oil, to one destination—experience in-train forces that are easier for railroads to model and engineers to predict because the railcars are generally uniform in size and weight. In comparison, determining train makeup is more complex in mixed freight trains, which can experience more unpredictable in-train forces resulting from railcars of different weights, lengths, and freight (e.g., bulk goods such as grain and coal, consumer goods such as automobiles, or hazardous materials). For example, if a train is assembled in a manner in which empty railcars alternate with loaded, heavy railcars, braking can create compression at the couplers and cause “buckling”—when an empty train car is compressed between heavier railcars and derails from the train tracks. Freight trains in the United States utilize air-braking systems to control speed and stop. A conventional air-braking system is controlled by an air pressure signal from the leading locomotive, which sends a signal through the train to engage brakes. Because each railcar receives this signal sequentially, it takes multiple seconds for railcars at the end of the train to receive the air pressure signal and begin braking, depending on the train’s length. The application of air brakes generates in-train forces, as railcars at the front of the train that have applied brakes will be pushed by railcars further back that have not yet received the air signal. Other technologies, including two-way end-of-train devices and DP, are frequently used by U.S. railroads in conjunction with conventional brakes to provide improved braking performance or other benefits. End-of-train devices measure brake pressure and transmit this information via radio signal to the front of the train. An end-of train-device can also engage air brakes at the rear end of a train in an emergency to decrease the time required to apply the brakes on all cars. As previously mentioned, railroads can also place radio-controlled locomotives, called DP units, throughout trains to spread out pulling and pushing power and improve braking. For example, engineers can engage a DP locomotive’s air brakes at the same time as a leading locomotive to decrease the time needed to activate brakes throughout the train. (See fig. 2.) Engineers can also use a locomotive’s dynamic brake system, which uses traction generated by the engine, to slow a train. While most railroads employ conventional brakes, railroads can also employ electronically controlled pneumatic brakes—which provide an electronic brake signal instantaneously throughout a train—allowing railcars to brake faster than with conventional air brakes. As we previously reported, electronically controlled pneumatic brakes reduce the in-train forces that occur during braking when individual cars push and pull against one another. Freight trains in the United States generally operate with two crew members—the conductor and the engineer. The conductor is responsible for the train, freight, and crew. The engineer operates the locomotive, including application of air brakes, dynamic brakes, and any radio- controlled DP locomotives. Train crews use hand-held radios to communicate when they are working in different parts of the train. For example, if the crew detects a train maintenance issue, the conductor may need to leave the locomotive and walk the length of the train to address the problem. In these situations, the conductor may use a hand- held radio to communicate. The U.S. Department of Transportation (DOT) is responsible for ensuring the safety of the transportation system. Within DOT, FRA is the primary federal agency responsible for formulating railroad safety policies and regulations and for monitoring and enforcing railroads’ compliance with requirements. FRA’s mission is to enable the safe, reliable, and efficient movement of people and goods. FRA provides regulatory oversight of the safety of U.S. railroads, including both passenger and freight. FRA issues and enforces safety regulations including requirements governing track, signal, and train control systems, grade-crossing warning systems, mechanical equipment such as locomotives and railcars, and railroad-operating practices. In developing most of its regulations, FRA seeks input from the railroad industry and other organizations through its Railroad Safety Advisory Committee. FRA provides oversight of railroad safety through a variety of activities, including periodic inspections and enforcement actions. FRA has safety inspectors and specialists in eight regional offices that are primarily responsible for the enforcement of federal laws and regulations related to railroad safety. FRA conducts inspections of railroads to monitor compliance with safety regulations, such as those governing the transport of hazardous materials, among other issues. In addition, 31 states conduct inspections for compliance with federal safety regulations. FRA trains state inspectors to enable them to conduct inspections according to FRA’s standards. In addition to these activities, FRA conducts other types of safety oversight to reduce train accidents, such as analyzing railroad safety data, investigating accidents, and reviewing complaints. FRA also funds research and development to support its safety oversight. FRA’s Office of Research, Development, and Technology conducts research to understand railroad safety risks and improve safety. This work contributes information used to inform FRA’s development of regulations, standards, and best practices. Other federal agencies also have roles in overseeing freight railroads, such as through promoting safety or regulating railroad industry economics. For example, NTSB is an independent federal agency that produces safety studies and investigates transportation-related accidents across all transportation modes to determine probable causes, identify safety issues, and make recommendations to prevent recurrences. STB oversees significant rail-service matters and resolves rate and service disputes between railroads and their customers, known as “shippers.” Class I railroads report data to STB on the amount and type of freight they transport. STB produces and releases statistical data derived from the railroad’s submitted data. According to officials from all seven Class I freight railroads and representatives from AAR, FRA, STB, and other stakeholders we interviewed, freight train-length has increased in recent years; however, the data are limited. According to data that two Class I railroads provided to us, their average train length increased over the 10-year period of 2008 through 2017 by about 1,500 feet for one railroad (from about 6,000 to 7,500 feet, or up to about 1.4 miles) and about 1,200 feet for the other railroad (from about 4,900 to 6,100 feet, or up to about 1.2 miles). These data represent an increase in the average length of a train of about 25 percent for both railroads. Two additional Class I railroads reported average train lengths between about 5,800 and 6,600 feet for the year 2017. However, we were not able to verify increases more broadly because FRA, STB, and AAR do not collect comprehensive data on train- length in feet, and while such data are collected by Class I railroads, they are not publicly available. Officials from two Class I railroads stated that operating longer trains is not a new practice, and one official noted that the railroad has been operating trains in excess of 10,000 feet in selected rail corridors for almost 30 years. Officials from AAR added that increases in train length over time have likely been gradual. While two Class I railroads provided data on average freight train-length over time, officials from each of the seven Class I railroads stated that they operate longer trains. Railroad officials said they operate these trains in certain rail corridors that have the capacity to accommodate longer trains, and not over their entire rail networks. For example, officials from one Class I railroad said they are running on a daily basis a 12,000-foot train—which is about 2.3 miles long—and another reported that twice weekly it operates a 16,000-foot train—which is about 3 miles long—on a route linking the mid-west to the west coast. Both of these Class I railroads noted that longer trains such as these are a small percentage of the trains they operate. More specifically, one of these railroads reported that over the previous 24 months, about 1 percent of its train-miles were traveled by trains over 10,000 feet long, and the other reported that about 2 percent of its current train-miles were traveled by trains over 10,000 feet long. Other data describing the average number of railcars per train and average weight of trains indicate an overall increase over the past 10 years. However, these measures are not proxies for freight train-length since the length and weight of railcars can vary significantly depending on their design and freight. Class I railroads are required to report data, such as the freight car-miles, to STB annually, and AAR aggregates and makes this information publicly available in various publications. We analyzed these data and found that the average number of railcars per freight train across all Class I railroads increased from 71.0 to 73.2 railcars per train (an increase of about 3 percent) from 2008 through 2017. Additionally, FRA and some Class I railroad officials stated that railroads operate freight trains that have more than twice this average number of railcars—including trains with 150 railcars or more. Similarly, the average train weight increased from about 5,978 tons to 6,577 tons per train (an increase of about 10 percent) from 2008 through 2017. Class I railroad officials said that there are advantages to operating longer freight trains in some rail corridors and that operating longer trains is part of strategic planning for many railroads for a variety of reasons. Officials from all Class I railroads stated that they operate longer trains in some rail corridors as a way to increase efficiencies, such as fuel efficiency, and decrease costs by reducing the number of train crew and other costs. Additionally, railroad officials said that running longer trains can mean that they do not need to operate as many trains—officials from six Class I railroads specifically indicated they are operating fewer shorter trains as a result of operating longer trains. Further, Class I railroad officials stated that market forces, such as competition from the trucking industry, create an incentive for them to increase efficiency. Class I railroad officials also stated that the use of certain technologies, such as DP locomotives, enables them to operate longer trains more safely. Other Class I railroad officials attributed their increased usage of longer trains to capital improvements on railroad tracks, such as lengthening the sidings to accommodate longer trains. While the need for proper train makeup and handling are not unique to longer trains, it is particularly important for their safe operation, according to stakeholders we spoke with. As previously discussed, the length of each train and its makeup—the manner in which its cars and locomotives are arranged—can affect the forces involved on a moving train. Stakeholders we spoke with said that the consequences of improper train makeup may be more pronounced in longer trains—especially in situations with extremes in track grade, curvature, or weather conditions—and may add to the challenges of operating longer trains. For example, FRA has investigated accidents in which it determined that train makeup and handling were the probable cause and contributing factors in train derailments of longer freight trains. According to officials from FRA, NTSB, railroad employee unions, and other stakeholders, longer mixed- freight trains may be more difficult to handle than unit trains in certain circumstances due to variations in car length and weight and the extent to which additional DP locomotives are employed. Stakeholders noted that placing additional DP locomotives within a train can improve train handling and prevent train separations and derailments. Stakeholders added that using DP can also help improve air brake performance and reduce braking response time, as previously discussed. In addition, according to stakeholders, use of properly positioned DP locomotives can improve radio communication between the lead locomotive and rear DP locomotives on longer trains. Union representatives added that in their view, the safest train-braking operations are when DP locomotives are used in conjunction with electronically controlled pneumatic brakes. According to representatives from AAR and Class I railroads, however, freight railroads have faced challenges with these braking systems, including reliability issues, as we have noted in a previous report. While there are no comprehensive federal regulations that govern train makeup, including use of DP locomotives, representatives of Class I railroads told us they consider a variety of factors when determining train makeup to ensure safe operation of all of their trains, including tonnage, train-length, and terrain. According to one railroad, using software to determine train makeup and predict train handling needs is an industry standard and critical best practice. Another railroad told us they use computer simulations to develop rules for train makeup in order to operate longer and heavier trains. Some railroads told us they impose length and weight restrictions on specific routes to ensure safe train operation and manage corridor capacity. Union representatives and rail experts we spoke with told us that in their view, railroads do not always properly assemble their longer trains, for example placing heavy railcars behind lighter railcars, a practice that can increase the likelihood of derailment. These stakeholders also said that railroads do not always use DP with longer trains, which experts attributed to the extra cost of deploying additional locomotives. We did not independently verify how the railroads we spoke with assemble or operate longer trains. Stakeholders we interviewed said that it is essential that crews are properly trained to operate longer freight trains. FRA regulations require railroads to train and certify their train crews. More specifically, FRA requires qualified locomotive engineers to demonstrate proficiency in operating trains in the most demanding type of service they may be permitted to perform, which includes operating longer trains. Railroads are required to conduct annual performance evaluations of engineers to ensure that they can safely operate trains according to federal railroad safety requirements. Representatives of Class I railroads told us they train their crews on trains and simulators with various routes, scenarios, and train lengths. However, union representatives said that some railroads do not provide sufficient training for crews to operate longer trains, and that some locomotive engineers and conductors lack the necessary training and experience to handle longer trains, a situation that can be challenging even for properly trained crew. As discussed later, FRA is planning to review this issue when it performs planned audits of Class I railroads’ training programs. Stakeholders we interviewed identified additional challenges for crews when operating longer freight trains related to crew members’ fatigue. For example, according to FRA, union representatives, and other stakeholders, a longer train may require crew members to walk a long distance if the train stops unexpectedly. For example, when there is a mechanical or other problem that causes a train to stop, the conductor may have to walk from the lead locomotive to the problem area and back again. This could mean walking 4 miles to the end and back on a 2-mile- long train. Also, according to FRA officials, as with any train that is left unattended, the crew must apply a sufficient number of handbrakes to prevent unintended movement. With longer and heavier trains, railroads may require additional handbrakes to be applied. According to union representatives, such physically demanding tasks can increase crew fatigue. Stakeholders we interviewed expressed divergent views about whether longer trains may increase or decrease blockages at grade crossings. Our prior work has noted a connection between the volume of freight rail traffic and the potential for grade-crossing blockages to increase. In 2014, we found that trends in freight flows, if they continue as expected, may exacerbate congestion issues in communities, particularly along certain corridors. FRA officials told us that complaints about blocked highway-rail grade crossings have increased in recent years. They noted that blocked crossings are a local concern and it is not clear the extent to which longer freight trains are contributing to increases in reporting about such blockages. According to FRA, trains sometimes block crossings for a limited time or for hours if an accident or mechanical problem occurs. They noted that such blockages can be created by trains of any length and that in their experience, railroads prioritize movement of longer trains, making it less likely that such trains would be responsible for prolonged blockages of crossings. Furthermore, officials from FRA and Class I railroads and others we spoke with pointed out that longer trains may decrease the frequency of blocked crossings, as railroads may run fewer trains. In contrast, officials from the National League of Cities, as well as state and local officials we spoke with, expressed concerns over increased frequency of longer trains and their impact on grade crossing safety. Although they also acknowledged that trains of any length can block grade crossings, they raised concerns that longer trains prolong the duration of a blockage and can block more crossings concurrently, making it harder for vehicles to find an alternate route around the train. Consequently, these stakeholders are concerned that longer trains create increased delays for emergency responders and increase the likelihood of unsafe behavior among motorists and pedestrians, as outlined below. Delayed emergency response. According to national, state, and local officials we interviewed, longer trains pose concerns about the potential for emergency response delays if responders encounter a train blocking one or more crossings and cannot quickly find an alternate route around it. (See fig. 3.) For example, officials in Mount Victory, Ohio, reported that 22 freight trains travel through their town daily, including a 16,000-feet train, which is nearly 3 miles long. This train blocks 4-to-5 grade crossings concurrently, which increases the time to access parts of the town, according to local officials. Our prior work has found that blocked highway-railroad grade crossings can have significant impacts on emergency response time and outcomes. For example, we reported an instance of a fire that destroyed a house while train traffic blocked the only two crossings in the town and prevented fire crews from responding in time. In another example, a local official in Texas said that one Class I railroad assembles trains and conducts brake checks on the main line tracks because the trains are too long to fit into sidings and railyards. Executing such procedures on mainline track has blocked grade crossings for up to several hours and poses safety challenges for surrounding communities, according to this local official. As a result of situations like these, communities are looking for ways to mitigate delays in emergency services when emergency vehicles must find ways around blocked grade crossings. For instance, some local officials in Washington and Ohio said they have revised their emergency response plans to avoid grade crossings that are likely to be blocked. Motorist and pedestrian behavior. Stakeholders we spoke with expressed concerns that longer trains may increase the likelihood of unsafe behavior among motorists and pedestrians. For example, fatalities can occur when motorists or pedestrians engage in risky behavior such as trying to make it across the tracks before an approaching train reaches the crossing. Moreover, pedestrians have been known to crawl over, through, or under stopped trains (see fig. 4). For example, local officials in Ohio and Texas told us that they have witnessed children crawling through stopped trains to get to school. Research sponsored by FRA has identified driver behavior as the main cause of highway-rail grade crossing collisions, but other factors such as train and traffic volume can contribute to the risk of a crash occurring. Although there are no current federal regulations that directly address blocked crossings or limit the amount of time trains can block grade crossings, some states and localities have attempted to address this issue. For example, some states and localities have passed laws limiting the duration of blocked crossings and proposed fines for railroads, but state and local officials and other stakeholders we spoke with said that federal law preempts such efforts. Other states and local communities have attempted to address blocked crossings through studies and communication with federal agencies and railroads, with mixed success. For example, the Texas Department of Transportation has undertaken mobility studies for the towns of El Paso and Laredo to identify options to address blocked crossings, such as constructing bridges or underpasses. According to officials with the Texas Department of Transportation, these studies identified alternatives that may help alleviate some of the vehicular/rail conflicts if they were implemented; however, the implementation of alternatives for any potential projects are constrained by the availability of funds. In other examples, local officials from Ohio and Illinois told us they have contacted Class I railroads and FRA to find solutions when idle trains lead to blocked crossings, especially when emergency access is a concern but continue to face challenges. Class I railroads and FRA officials said they work with local communities to find solutions to these issues. Additionally, state and local officials noted that they do not have access to information on the length of trains that travel through their communities. Some added that freight railroads are not required to provide such data and that local efforts to gather this information, such as through videotaping train movements and analyzing data, are costly. This circumstance makes it challenging for state and local officials to assess the extent to which longer trains may or may not be contributing to blocked crossings. In the fall of 2017, FRA began a study to understand operational risks of long freight trains. The study is examining issues related to train makeup and handling, including the use of DP locomotives, crew training and fatigue, and braking performance for longer trains. The study intends to identify strategies to reduce any risks identified. According to FRA, as the railroad industry has increased the length of freight trains, past accepted practices for train makeup and handling may not be appropriate for longer trains. For example, according to FRA, the current performance standard for air brakes was last updated in 1947 and based on tests for trains with up to 150 cars. FRA officials stated the study will conduct air brake tests to evaluate brake performance for trains with 150-to-250 railcars and use this data to conduct computer simulations of trains in a variety of configurations—for example, with and without DP and with DP locomotives at different locations throughout a train—to evaluate in-train forces. According to FRA officials, this information will help FRA determine whether rail safety issues exist for trains with over 150 railcars and if regulatory actions are necessary. The study employs a two-phase approach that includes data analysis, literature review, computer simulations, and brake testing. FRA officials said the agency plans to complete the first phase of its study and issue a report by the end of 2020 and issue a report on the second phase by the end of 2021. Table 1, below, outlines specific tasks of the study by phase. As we previously mentioned, FRA provides oversight of railroad safety through a variety of activities to ensure compliance with regulations, such as conducting inspections of railroad operations and reviewing and approving new and materially modified railroad crew training programs. According to FRA officials, these activities address safety for all freight trains, including longer trains. In addition to these activities, FRA plans to begin new, more in-depth audits of Class I railroads’ training programs on a systematic basis in 2019 to determine whether engineers are being adequately trained to operate longer trains and perform other types of demanding service. According to FRA, these audits will determine whether locomotive engineer certification programs are in compliance with federal rail safety regulations. For example, federal regulations require that railroads provide training to their engineers—through classroom lessons and in trains or simulators—on the most demanding type of service they may be called upon to perform. According to FRA officials, this would include operation of longer freight trains in challenging terrain. FRA plans to audit the training programs of three Class I railroads by the end of 2019, selected based upon safety risk factors, with additional audits of other railroads planned for the following year. Once the audits are complete, FRA plans to discuss its findings with each audited railroad and make recommendations for improvements, as needed. While FRA’s study to assess operational safety risks of longer trains is under way, the agency lacks a current, documented strategy for how it will use and share the results of its research with relevant stakeholders. According to FRA officials, after internal review and approval, the agency routinely shares its research results at conferences and on its website. However, FRA’s strategic plan for research and development, which outlined how the agency shares research results and engages with internal and external stakeholders in support of FRA’s rail safety mission, expired in 2017. More specifically, this plan outlined key internal and external stakeholders and their roles—including labor and industry partners—and specific outreach strategies, such as holding periodic, public events to present FRA’s research and development. This plan also stated that FRA’s research provides the scientific and technological basis for its rulemaking and regulation enforcement and that effectively sharing the results of its studies increases the likelihood that its research will have “real world” impacts. According to FRA officials, the agency is currently updating its strategic plan for research and development, which will outline FRA’s goals and objectives for its research, and expects to finalize the plan by the summer of 2019. FRA does not have any other documented policies in place for how it will use or disseminate the results of its study. Federal internal control standards call for management to communicate quality information—using appropriate methods—both internally and externally in order to achieve an entity’s objectives and respond to risks. Further, our work on best practices for strategic planning has found that formulating specific strategies and linking them with goals and objectives is critical for agencies to achieve these goals and objectives. In addition, we previously identified generally accepted research standards for sound studies, standards that include presentation of results. These standards call for relevant stakeholders to be informed of research results and any recommendations upon completion of a study. The Transportation Research Board—a part of the National Academies of Sciences, Engineering, and Medicine which provides research-based solutions to improve transportation, among other things—has found that organizations that develop processes and a systematic approach to implementing research are more effective and efficient at applying research results. FRA’s study is a first step for determining how, if at all, makeup and handling for longer trains as well as their crews’ needs may differ from shorter trains. If study results are effectively shared with relevant stakeholders, then those best situated to act on the results may be more likely to do so. For example, FRA officials—who have rulemaking and enforcement authority—could identify and implement changes needed to improve the safety of longer train operations, such as by issuing relevant guidance, rulemaking, or other actions. Similarly, external stakeholders, such as Class I railroads and workers, would have the opportunity to use study results to inform their practices and policies, such as making changes to internal train-makeup rules or operators’ training programs for longer trains. As FRA updates its strategic plan for research and development, formulating specific strategies for how it will share its research results with internal and external stakeholders would help to ensure FRA is in the best position to achieve its research goals and objectives in support of the agency’s mission of enabling the safe, efficient, and reliable transportation of people and goods. While FRA is taking steps to assess operational safety risks of longer trains through its study and other efforts, it is not assessing whether longer freight trains impact communities by blocking more grade crossings. Safety at grade crossings has been a longstanding issue in the United States, and according to stakeholders we spoke with, some of these issues may be exacerbated by longer trains. In 2006, as part of its report on the impacts of blocked grade crossings on emergency response services, FRA stated that future growth in rail and highway traffic will likely increase blocked crossings, and more recently FRA officials stated that this is still the case. In addition, while collisions at grade crossings have declined over time, FRA also expects the risk of grade-crossing incidents to grow as both rail and highway traffic increase during the next decade. However, FRA officials also stated that there is no evidence that more blocked crossings results in more grade-crossing incidents. Further, according to FRA, the agency is not in a position to address community- specific public safety issues. We have previously reported that the amount of time that grade crossings are blocked depends on a number of factors and is typically a function of the number, speed, and length of trains. Although there are no federal regulations directly addressing blocked grade crossings, to gauge the extent of reported instances of blocked crossings, in early 2018, FRA began to track data on the location of blocked-crossing complaints from state rail-safety managers in nine states. FRA officials stated they intend to use this data to identify communities where frequently blocked grade crossings are reported and work with the railroads and communities for resolution. However, FRA officials said they do not plan to explore any potential impacts of longer trains on grade crossings in communities, as FRA officials have stated they do not believe that longer trains are having an impact on blocked crossings. For example, FRA does not plan to use any of the information gathered in its longer train study—which will include a sampling of the routes longer trains travel—to inform the agency’s work on blocked crossings because FRA officials stated that they do not expect the study will yield relevant information. State and local officials we spoke with, as previously mentioned, expressed concerns about the potential for longer trains to increase the number of blocked grade crossings, causing delays for emergency responders and affecting the behavior of motorists and pedestrians. Federal internal control standards state that effective use of information and communication are vital for an entity to achieve its objectives. These standards call for management to use quality information—relevant, reliable information that is current, complete, accurate, accessible, and timely—to achieve an agency’s objectives and respond to risks. Further, we previously identified essential practices for agencies to help manage risks and identify opportunities that could impact the achievement of agencies’ goals. These risk-management practices call on agencies to systematically identify risks and use the best information available to assess them. Community officials acknowledged that while they believe longer trains are making blocked crossings worse, they do not have access to information needed to confirm this observation. As previously discussed, some local communities continue to face challenges after reaching out to FRA and Class I railroads to find solutions to issues related to grade crossings. As these issues continue to evolve and FRA works to identify locations where blocked crossings are reported, working with railroads and local communities to identify any potential impacts of longer trains on grade crossings would help FRA to determine whether and how longer trains are affecting these communities and what could be done to address those impacts. In addition, it would allow FRA to determine whether it should take additional action to ensure that longer trains are operating safely and to work with railroads to minimize their impact to the communities through which they travel. FRA faces a challenging task in assessing the safety impacts of longer trains and has taken some important steps to collect needed information through its study of longer trains’ operations. However, without documented strategies for how it plans to communicate the results of its research, FRA may lose an opportunity to effectively work with internal and external stakeholders—such as railroads, railroad workers, and local communities—to address any risks of operating longer trains in support of the agency’s mission of enabling the safe, efficient, and reliable transportation of people and goods. In addition, local community officials we spoke with raised concerns that longer trains are creating safety risks by causing emergency response delays and exacerbating dangerous motorist and pedestrian behavior, but acknowledged that they lack access to information on longer trains. FRA, however, is uniquely positioned to assess whether these concerns have merit. As FRA has stated, it expects that future growth in rail and highway traffic will increase incidences of blocked crossings and the risk of grade-crossing incidents. As traffic continues to grow—including railroads’ potential increased use of longer trains—having better information could be useful to FRA and other stakeholders. Without examining the potential impacts of longer trains on local communities, including on blocked grade crossings, FRA may lose an opportunity to identify what, if any, additional actions should be taken to ensure the safety of longer trains and the communities through which they travel. We are making the following two recommendations to FRA: The Administrator of FRA should develop a strategy for sharing FRA’s research results with internal and external stakeholders and implement that strategy for its research on the safety impacts of very long trains. (Recommendation 1) The Administrator of FRA should work with railroads to engage state and local governments to (a) identify community-specific impacts of train operations, including longer trains, where streets and highways cross railroad rights-of-way and (b) develop potential solutions to reduce those impacts. (Recommendation 2) We provided a draft of this report to DOT, NTSB, and STB for their review and comment. In its comments, reproduced in appendix I, DOT concurred with the recommendations. DOT and STB also provided technical comments, which we incorporated as appropriate. NTSB had no comments. As agreed with your office, unless you publicly announce the contents of this report earlier, we plan no further distribution until 30 days from the report date. At that time, we will send copies of this report to the appropriate congressional committees, the Secretary of Transportation, the Chairman of NTSB, the Chairman of STB, and other interested parties. In addition, the report will be available at no charge on the GAO website at http://www.gao.gov. If you or your staff have any questions about this report, please contact me at (202) 512-2834 or FlemingS@gao.gov. Contact points for our Offices of Congressional Relations and Public Affairs may be found on the last page of this report. GAO staff who made key contributions to this report are listed in appendix II. In addition to the contact named above, Andrew Huddleston (Assistant Director); Jean Cook (Analyst in Charge); Jason Coates; Philip Farah; David Hooper; Rosa Leung; Gail Marnik; John Mingus; Madhav Panwar; Malika Rice; Kelly Rubin; and Michelle Weathers made key contributions to this report.

Summary: In 2017, the U.S. freight rail system moved over 1.5-billion tons of goods. The largest freight railroads—Class Is—dominate the industry and account for more than 90 percent of its annual revenue. In recent years, railroad workers and local communities have expressed safety concerns related to longer freight trains, and recent accidents involving such trains are currently under investigation by FRA. FRA does not currently place limits on freight train length. GAO was asked to review the safety and other impacts of longer freight trains. This report examines: (1) changes in freight train length over time, (2) safety considerations for operating longer freight trains, and (3) the extent to which FRA is assessing any safety risks. GAO reviewed relevant statutes, regulations, and federal agencies' reports and plans; analyzed available data on freight train length from railroads; and interviewed federal officials and various stakeholders, including state and local officials and first responders from five states (selected to represent different railroads and regions), and officials from the railroad industry, unions, and advocacy groups. Freight train length has increased in recent years, according to all seven Class I freight railroads. Data on train length are not publicly available; however data provided to GAO by two Class I railroads indicated that their average train length has increased by about 25 percent since 2008, with average lengths of 1.2 and 1.4 miles in 2017. Officials from all seven Class I railroads said they are currently operating longer than average trains on specific routes, although some said such trains are a small percentage of the trains they operate. One railroad said it runs a 3-mile-long train twice weekly. Officials identified increased efficiencies and economic benefits among the advantages of longer freight trains. Stakeholders said that the arrangement of train cars and locomotives—known as “train makeup”—and the potential for blocking highway-railroad crossings are issues to consider to safely operate longer freight trains. To prevent derailment, stakeholders said it is important that longer trains are arranged appropriately and that crews are trained to operate them. While Class I railroads and others said that longer trains may decrease the frequency of blocked crossings, some state and local officials said these trains can prolong their duration, posing challenges for emergency responders unable to cross the tracks. The Federal Railroad Administration (FRA) is studying the safety risks of and strategies for operating longer trains. As part of the study, FRA plans to analyze train-handling and braking capabilities under varying conditions. FRA officials said they plan to share their research results with relevant stakeholders; however, FRA currently has no documented strategy for sharing the results of its research. FRA officials are also analyzing which parts of the country are reporting frequently blocked crossings. However, FRA officials said they do not plan to use information from either of these efforts to determine whether longer freight trains might contribute to increases in blocked crossings, and the officials believe the issues are unrelated. Developing and implementing a strategy for sharing FRA's research results and identifying any potential impacts of longer freight trains on highway-railroad crossings would enable FRA and stakeholders to better determine what, if any, actions are needed to ensure the safe operation of longer freight trains. GAO recommends that FRA develop and implement a strategy to share the results of its study on longer trains and work with railroads to engage state and local governments to identify and reduce impacts of longer freight trains on highway-railroad crossings. FRA concurred with GAO's recommendations.