CSX Corporation (“CSX”), and together with its subsidiaries (the “Company”), based in Jacksonville, Florida, is one of the nation's leading transportation companies. The Company provides rail-based freight transportation services including traditional rail service, and the transport of intermodal containers and trailers.trailers, as well as other transportation services such as rail-to-truck transfers and bulk commodity operations. CSX and the rail industry provide customers with access to an expansive and interconnected transportation network that plays a key role in North American commerce and is critical to the long-term economic success and improved global competitiveness of the United States. In addition, freight railroads provide the most economical and environmentally efficient means to transport goods over land.

The Company’s number of employees was approximately 29,00024,000 as of December 2015,2017, which includes approximately 24,00020,000 union employees. Most of the Company’s employees provide or support transportation services.  

CSX’s principal operating subsidiary, CSX Transportation, Inc. (“CSXT”), provides an important link to the transportation supply chain through its approximately 21,000 route mile rail network, which serves major population centers in 23 states east of the Mississippi River, the District of Columbia and the Canadian provinces of Ontario and Quebec. It has access to over 70 ocean, river and lake port terminals along the Atlantic and Gulf Coasts, the Mississippi River, the Great Lakes and the St. Lawrence Seaway. This access allows the Company to meet the dynamic transportation needs of manufacturers, industrial producers, the automotive industry, construction companies, farmers and feed mills, wholesalers and retailers, and energy producers. The Company’s intermodal business links customers to railroads via trucks and terminals. CSXT also serves thousands of production and distribution facilities through track connections towith other Class I railroads and approximately 240230 short-line and regional railroads.

In addition to CSXT, the Company’s subsidiaries include CSX Intermodal Terminals, Inc. (“CSX Intermodal Terminals”), Total Distribution Services, Inc. (“TDSI”), Transflo Terminal Services, Inc. (“Transflo”), CSX Technology, Inc. (“CSX Technology”) and other subsidiaries. CSX Intermodal Terminals owns and operates a system of intermodal terminals, predominantly in the eastern United States and also performs drayage services (the pickup and delivery of intermodal shipments) for certain customers and trucking dispatch operations. TDSI serves the automotive industry with distribution centers and storage locations. Transflo connects non-rail served customers to the many benefits of rail by transferring products from rail to trucks. The biggest Transflo markets are chemicals and agriculture, which includes shipments of plastics and ethanol. CSX Technology and other subsidiaries provide support services for the Company.

In 2017, the Company began transitioning its operating model to scheduled railroading, which is focused on developing and strictly maintaining a scheduled service plan with an emphasis on optimizing assets. When the operating model is executed effectively, customer service is improved, costs are reduced and free cash flow is generated, allowing financial growth. E. Hunter Harrison created and refined the model during his decades of railroad leadership experience, successfully implementing it at three different railroads prior to being named CEO of CSX Real Property, Inc.,in March 2017. In October 2017, the Company hired James M. Foote, a subsidiary responsible forrailroad executive with extensive scheduled railroading experience, as Chief Operating Officer. Upon Mr. Harrison's death in December 2017, Foote was appointed CEO by the Company’sBoard of Directors to continue driving CSX's transformation under the new operating and non-operating real estate sales, leasing, acquisition and management and development activities.  These activities are classifiedmodel. Additionally, Edmond L. Harris was named Executive Vice President of Operations in either operating income or other income - net depending uponJanuary 2018, further strengthening the naturescheduled railroading experience of the activity. Results of these activities fluctuate with the timing of real estate transactions.leadership team.

See Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations for operating revenue, operating income and total assets for each of the last three fiscal years.

A leader in freight rail transportation for nearlymore than 190 years, the Company’s heritage dates back to the early nineteenth century when The Baltimore and Ohio Railroad Company (“B&O”) – the nation’s first common carrier – was chartered in 1827. Since that time, the Company has built on this foundation to create a railroad that could safely and reliably service the ever-increasing demands of a growing nation.

Since its founding, numerous railroads have combined with the former B&O through merger and consolidation to create what has become CSX. Each of the railroads that combined into the CSX family brought new geographical reach to valuable markets, gateways, cities, ports and transportation corridors.

    

CSX was incorporated in 1978 under Virginia law. In 1980, the Company completed the merger of the Chessie System and Seaboard Coast Line Industries into CSX. The merger allowed the Company to connect northern population centers and Appalachian coal fields to growing southeastern markets. Later, the Company’s acquisition of key portions of Conrail, Inc. ("Conrail") allowed CSXT to link the northeast, including New England and the New York metropolitan area, with Chicago and midwestern markets as well as the growing areas in the Southeast already served by CSXT. This current rail network allows the Company to directly serve every major market in the eastern United States with safe, dependable, environmentally responsible and fuel efficient freight transportation and intermodal service.

The business environment in which the Company operates is highly competitive. Shippers typically select transportation providers that offer the most compelling combination of service and price. Service requirements, both in terms of transit time and reliability, vary by shipper and commodity. As a result, the Company’s primary competition varies by commodity, geographic location and mode of available transportation and includes other railroads, motor carriers that operate similar routes across its service area and, to a less significant extent, barges, ships and pipelines.

CSXT’s primary rail competitor is Norfolk Southern Railway, which operates throughout much of the Company’s territory.  Other railroads also operate in parts of the Company’s territory. Depending on the specific market, competing railroads and deregulated motor carriers may exert pressure on price and service levels. For further discussion on the risk of competition to the Company, see Item 1A. Risk Factors.

The Company's operations are subject to various federal, state, provincial (Canada) and local laws and regulations generally applicable to businesses operating in the United States and Canada. In the U.S., the railroad operations conducted by the Company's subsidiaries, including CSXT, are subject to the regulatory jurisdiction of the Surface Transportation Board (“STB”), the Federal Railroad Administration (“FRA”), and its sister agency within the U.S. Department of Transportation ("DOT"), the Pipeline and Hazardous Materials Safety Administration (“PHMSA”). Together, FRA and PHMSA have broad jurisdiction over railroad operating standards and practices, including track, freight cars, locomotives and hazardous materials requirements. In addition, the U.S. Environmental Protection Agency (“EPA”) has regulatory authority with respect to matters that impact the Company's properties and operations. The EPA is considering regulatory action directed towards the railroad industry governing the disposal of creosote cross-ties and seeking to increase air emission regulations that may impact our operations or increase costs. Similarly, the Transportation Security Administration (“TSA”), a component of the Department of Homeland Security, has broad authority over railroad operating practices that may have homeland security implications. In Canada, the railroad operations conducted by the Company’s subsidiaries, including CSXT, are subject to the regulatory jurisdiction of the Canadian Transportation Agency.

Although the Staggers Act of 1980 significantly deregulated the U.S. rail industry, the STB has broad jurisdiction over rail carriers. The STB regulates routes, fuel surcharges, conditions of service, rates for non-exempt traffic, acquisitions of control over rail common carriers and the transfer, extension or abandonment of rail lines, among other railroad activities.

In 2008, Congress enacted the Rail Safety Improvement Act (the “RSIA”).  The legislation included a mandate that all Class I freight railroads implement an interoperable positive train control system (“PTC”) by December 31, 2015. Implementation of a PTC system is designed to prevent train-to-train collisions, over-speed derailments, incursions into established work-zone limits, and train diversions onto another set of tracks. On October 29, 2015, the President of the United States signed the Positive Train Control Enforcement and Implementation Act of 2015 into law extending the deadline. This Act requires the installation of all PTC hardware be completed by December 31, 2018, and, assuming certain conditions are met, requires that the PTC system be fully operational by December 31, 2020.

PTC must be installed on all main lines with passenger and commuter operations as well as most of those over which toxic-by-inhalation hazardous materials are transported. The Company expects to incurcontinue incurring significant capital costs in connection with the implementation of PTC as well as related ongoing operating expenses. CSX currently estimates that the total multi-year cost of PTC implementation will be approximately $2.2$2.4 billion for the Company. Total PTC investment through 20152017 was $1.5$2 billion.

In 2012, the STB announced it would accept comments on a proposal by the National Industrial Transportation League that would require Class I railroads to provide a form of "competitive access" to customers served solely by one railroad. Under this proposal, CSX would be required to allow a competing railroad to access certain customers that are currently solely served by CSX's network. In early 2013, shippers, railroads and other parties submitted comments on the proposal, and the STB held a hearing in March 2014 to receive further input from participating parties. Since the hearing, the STB has taken no further action in the proceeding.

In April 2014, the STB announced it would receive comments to explore its methodology for determining railroad revenue adequacy. The revenue adequacy standard represents the level of profitability for a healthy carrier. Shippers, railroads and other parties filed comments in late 2014. More recently, theThe STB held a hearing in July 2015 to receive further input from participating parties. Since the hearing, the STB has taken no further action in the proceeding.

CSX has included the certifications of its Chief Executive Officer (“CEO”) and the Chief Financial Officer (“CFO”) required by Section 302 of the Sarbanes-Oxley Act of 2002 (“the Act”) as Exhibit 31, as well as Section 906 of the Act as Exhibit 32 to this Form 10-K report.

The risks set forth in the following risk factors could have a materially adverse effect on the Company's financial condition, results of operations or liquidity, and could cause those results to differ materially from those expressed or implied in the Company's forward-looking statements. Additional risks and uncertainties not currently known to the Company or that the Company currently does not deem to be material also may materially impact the Company's financial condition, results of operations or liquidity.

Legislation passed by Congress, or new regulations issued by federal agencies canor executive orders issued by the President of the United States could significantly affect the revenues, costs and profitability of the Company's business. For instance, several of the proposals under consideration by the STB could have a significant negative impact on the Company's ability to negotiate prices for the value of rail services provided and meet service standards, which could force a reduction in capital spending. In addition, statutes imposing price constraints or affecting rail-to-rail competition could adversely affect the Company's profitability.

The Company is subject to the jurisdiction of various regulatory agencies, including the STB, FRA, PHMSA, TSA, EPA and other state, provincial and federal regulatory agencies for a variety of economic, health, safety, labor, environmental, tax, legal and other matters. New or modified rules or regulations by these agencies could increase the Company's operating costs or reduce operating efficiencies and impact service performance.  For example, the RSIA mandates that the installation of PTC hardware be completed by December 31, 2018 and, assuming certain conditions are met, requires that the PTC system be fully operational by December 31, 2020 on main lines that carry certain hazardous materials and on lines that have commuter or passenger operations. NoncomplianceAlthough CSX remains on track to meet this regulatory requirement, noncompliance with these and other applicable laws or regulations could erode public confidence in the Company and can subject the Company to fines, penalties and other legal or regulatory sanctions.

Climate change and other emissions-related legislationlaws and regulationregulations have been proposed and, in some cases adopted, on the federal, state, provincial and local levels. These final and proposed laws and regulations take the form of restrictions, caps, taxes or other controls on emissions. In particular, the EPA has issued various regulations and is expected tomay issue additional regulations targeting emissions, including rules and standards governing emissions from certain stationary sources and from vehicles.

Any of these pending or proposed laws or regulations could adversely affect the Company's operations and financial results by, among other things: (i) reducing coal-fired electricity generation due to mandated emission standards; (ii) reducing the consumption of coal as a viable energy resource in the United States and Canada; (iii) increasing the Company's fuel, capital and other operating costs and negatively affecting operating and fuel efficiencies; and (iv) making it difficult for the Company's customers in the U.S. and Canada to produce products in a cost competitive manner. Any of these factors could reduce the amount of shipments the Company handles and have a material adverse effect on the Company's financial condition, results of operations or liquidity.

The Company is subject to wide-ranging federal, state, provincial and local environmental laws and regulations concerning, among other things, emissions into the air, ground and water; the handling, storage, use, generation, transportation and disposal of waste and other materials; the clean-up of hazardous material and petroleum releases and the health and safety of our employees. If the Company violates or fails to comply with these laws and regulations, CSX could be fined or otherwise sanctioned by regulators. The Company can also be held liable for consequences arising out of human exposure to any hazardous substances for which CSX is responsible. In certain circumstances, environmental liability can extend to formerly owned or operated properties, leased properties, adjacent properties and properties owned by third parties or Company predecessors, as well as to properties currently owned, leased or used by the Company.

The Company has been, and may in the future be, subject to allegations or findings to the effect that it has violated, or is strictly liable under, environmental laws or regulations, and such violations can result in the Company's incurring fines, penalties or costs relating to the clean-up of environmental contamination. Although the Company believes it has appropriately recorded current and long-term liabilities for known and reasonably estimable future environmental costs, it could incur significant costs that exceed reserves or require unanticipated cash expenditures as a result of any of the foregoing. The Company also may be required to incur significant expenses to investigate and remediate known, unknown or future environmental contamination.

The capital intensive nature and sophistication of core rail equipment (including rolling stock equipment, locomotives, rail, and ties) limits the number of railroad equipment suppliers. If any of the current manufacturers stops production or experiences a supply shortage, CSXT could experience a significant cost increase or material shortage. In addition, a few critical railroad suppliers are foreign and, as such, adverse developments in international relations, new trade regulations, disruptions in international shipping or increases in global demand could make procurement of these supplies more difficult or increase CSXT's operating costs. Additionally, if a fuel supply shortage were to arise, whether due to production restrictions, lower refinery outputs, a disruption of oil imports, adverse political developments or otherwise, the Company would be negatively impacted.

The Company experiences competition in pricing, service, reliability and other factors from various transportation providers including railroads and motor carriers that operate similar routes across its service area and, to a less significant extent, barges, ships and pipelines. Other transportation providers generally use public rights-of-way that are built and maintained by governmental entities, while CSXT and other railroads must build and maintain rail networks largely using internal resources. Any future improvements or expenditures materially increasing the quality or reducing the cost of alternative modes of transportation such as through the use of automation, autonomy or electrification, or legislation providing for less stringent size or weight restrictions on trucks, could negatively impact the Company's competitive position. Additionally, any future consolidation in the rail industry could materially affect the regulatory and competitive environment in which the Company operates.

Terrorist attacks, along with any government response to those attacks, may adversely affect the Company's financial condition, results of operations or liquidity.  CSXT's rail lines, other key infrastructure and information technology systems may be direct targets or indirect casualties of acts of terror or war.  This risk could cause significant business interruption and result in increased costs and liabilities and decreased revenues.  In addition, premiums charged for some or all of the insurance coverage currently maintained by the Company could increase dramatically, or the coverage may no longer be available.

Furthermore, in response to the heightened risk of terrorism, federal, state and local governmental bodies are proposing and, in some cases, have adopted legislation and regulations relating to security issues that impact the transportation industry.  For example, the Department of Homeland Security adopted regulations that require freight railroads to implement additional security protocols when transporting hazardous materials.  Complying with these or future regulations could continue to increase the Company's operating costs and reduce operating efficiencies.

The Company's operations may be affected by external factors such as severe weather and other natural occurrences, including floods, fires, hurricanes and earthquakes.  As a result, the Company's rail network may be damaged, its workforce may be unavailable, fuel costs may rise and significant business interruptions could occur.  In addition, the performance of locomotives and railcars could be adversely affected by extreme weather conditions.  Insurance maintained by the Company to protect against loss of business and other related consequences resulting from these natural occurrences is subject to coverage limitations, depending on the nature of the risk insured. This insurance may not be sufficient to cover all of the Company's damages or damages to others, and this insurance may not continue to be available at commercially reasonable rates. Even with insurance, if any natural occurrence leads to a catastrophic interruption of service, the Company may not be able to restore service without a significant interruption in operations.

As part of its railroad and other operations, the Company is subject to various claims and lawsuits related to disputes over commercial practices, labor and unemployment matters, occupational and personal injury claims, property damage, environmental and other matters.  The Company may experience material judgments or incur significant costs to defend existing and future lawsuits. Although the Company establishes reserves and maintains insurance to cover some of these types of claims and establishes reserves when appropriate, final amounts determined to be due on any outstanding matters may exceed the Company's insurance coverage or differ materially from the recorded reserves and exceed the Company's insurance coverage.reserves. Additionally, the Company is subject tocould be impacted by adverse developments not currently reflected in the Company's reserve estimates.

Marketplace conditions for resources like locomotives as well as the availability of qualified personnel, particularly engineers and trainmen,conductors, could each have a negative impact on the Company’s ability to meet demand for rail service. Although the Company believes that it has adequate personnel for the current business environment, unpredictable increases in demand for rail services or extreme weather conditions may exacerbate such risks, which could have a negative impact on the Company’s operational efficiency and otherwise have a material adverse effect on the Company’s financial condition, results of operations, or liquidity in a particular period.

Due to the significant capital expenditures required to operate and maintain a safe and efficient railroad, the Company regularly relies on capital markets for the issuance of long-term debt instruments as well as on bank financing from time to time. Instability or disruptions of the capital markets, including credit markets, or the deterioration of the Company’s financial condition due to internal or external factors, could restrict or prohibit access and could increase the cost of financing sources. A significant deterioration of the Company’s financial condition could also reduce credit ratings and could limit or affect its access to external sources of capital and increase the costs of short and long-term debt financing.

The Company’s properties primarily consist of track and its related infrastructure, locomotives and freight cars and equipment. These categories and the geography of the network are described below.

Serving 23 states, the District of Columbia, and the Canadian provinces of Ontario and Quebec, the CSXT rail network serves, among other markets, New York, Philadelphia and Boston in the Northeast and Mid-Atlantic, the southeast markets of Atlanta, Miami and New Orleans, and the midwestern cities of St. Louis, Memphis and Chicago.

In addition to its physical track structure, CSXTthe Company operates numerous yards and terminals.terminals for rail and intermodal service. These serve as hubspoints of connectivity between CSXTthe Company and its local customers and as sorting facilities where railcars oftenand intermodal containers are received, re-sortedclassed for destination and placed onto new outbound trains.trains, or arrive and are delivered to the customer. In 2017, CSX converted a number of hump yards to flat switching operations which allows for less intermediate processing and the opportunity to improve transit time. The Company’s ten largest yards and terminals based on annual2017 volume (number of railcars or intermodal containers processed) are listed in the table below.

CSXT’s operations are primarily focused on four major transportation networks and corridors which are defined geographically and by commodity flows below.

See the following page for a map of the CSX Rail Network.

     In 2015, the average daily fleet of cars on line consisted of approximately 206,000 cars. At any time, over half of the railcars on the CSXT system are not owned or leased by the Company. Examples of these non-CSXT railcars are as follows:include railcars owned by other railroads (which are utilized by CSXT), shipper-furnished or private cars (which are generally used only in that shipper’s service) and, multi-level railcars used to transport automobiles (which are shared amongbetween railroads).  and doublestack railcars, or well cars (which are industry pooled), that allow for two intermodal containers to be loaded one above the other.

Executive officers of the Company are elected by the CSX Board of Directors and generally hold office until the next annual election of officers. There are no family relationships or any arrangement or understanding between any officer and any other person pursuant to which such officer was elected. As of the date of this filing, the executive officers’ names, ages and business experience are:

CSX’s common stock is listed on the Nasdaq Global Select Market, which is its principal trading market, and is traded over-the-counter and on exchanges nationwide. The official trading symbol is “CSX.” 

The following table sets forth, for the quarters indicated, the dividends declared and the high and low share prices of CSX common stock.

The cumulative shareholder returns, assuming reinvestment of dividends, on $100 invested at December 31, 20102012 are illustrated on the graph below. The Company references the Standard & PoorPoor's 500 Stock Index (“S&P 500”500 ®”), which is a registered trademark of the McGraw-Hill Companies, Inc., and the Dow Jones U.S. Transportation Average Index, which provide comparisons to a broad-based market index and other companies in the transportation industry.  

CSX is required to disclose any purchases of its own common stock for the most recent quarter. CSX purchases its own shares for two primary reasons: (1) to further its goals under its share repurchase program and (2) to fund the Company’s contribution required to be paid in CSX common stock under a 401(k) plan that covers certain union employees.