Ground Transportation 2026 Comparisons

The US freight transportation market remains heavily dependent on trucking, with rail continuing to play a critical role in long-haul bulk commodities, intermodal freight and industrial supply chains. Over the past 12 months, freight volumes have stabilised following the significant supply chain disruptions and inventory adjustments experienced during the post-pandemic period. While trucking markets have remained competitive and, in some sectors, oversupplied, rail operators have benefited from continued growth in intermodal traffic and ongoing efforts by shippers to diversify transportation options.

Road infrastructure investment has continued to be supported by federal funding made available under the Infrastructure Investment and Jobs Act (IIJA), as well as state transportation programmes. A number of states with established public-private partnership (P3) programmes, including Texas, Virginia, Georgia, Colorado and Maryland, continue to evaluate major highway expansion and managed lane projects through alternative delivery models. In the road sector, investors remain focused on projects that can demonstrate reliable revenue streams through tolling or availability-payment structures.

In the rail sector, investment activity has been driven primarily by freight network modernisation, port connectivity improvements, grade separation projects and passenger rail initiatives with freight-related benefits. Unlike the road sector, however, large-scale rail P3 transactions remain relatively uncommon. Most rail projects continue to be publicly sponsored and publicly financed, although private participation is frequently utilised through design-build, operations and maintenance, rolling stock and concession arrangements.

Over the short to medium term, the outlook for the US freight transportation sector remains positive. Continued federal infrastructure spending, nearshoring trends, growth in Gulf Coast and East Coast port activity, expansion of logistics facilities and increasing demand for resilient supply chains are expected to support investment in both road and rail infrastructure. For investors, the most active opportunities are likely to remain highway P3 projects, managed lanes, freight corridors, port access infrastructure and logistics-related transportation assets.

In the road sector, managed lanes, express toll lanes and congestion relief projects remain among the most attractive opportunities for private investment. States with mature P3 frameworks continue to rely on long-term concession structures to accelerate project delivery and transfer construction, lifecycle and operational risks. Investors continue to view Virginia and Georgia as among the most developed P3 markets in the United States due to their established legislative frameworks and successful track records of delivering major transportation projects.

In August 2025, Meridiam, ACS Infrastructure and Acciona achieved financial close for the design, construction, operation and maintenance of the SR400 Express Lanes toll road project in Atlanta under a concession term of approximately 56 years. As of June 2026, two other major managed lanes projects are in procurement: the I-285 Express Lanes project in Georgia and the I-24 Choice Lanes project in Tennessee.

Rail investment has focused on network capacity enhancements, intermodal facilities, port-related infrastructure and modernisation of existing freight corridors. Although rail privatisation transactions remain rare, private-sector participation continues through construction contracts, operating agreements, rolling stock procurement and project financing arrangements. The Denver Eagle commuter rail project and the Maryland Purple Line remain the most frequently cited examples of large-scale rail P3 delivery models in the United States, although neither follows the traditional toll-road concession model commonly seen in highway projects. Brightline continues to privately develop high-speed rail networks. Following the commencement of service on its Miami to Orlando line, its Los Angeles to Las Vegas line is under development. The latter project received an approximately USD3 billion grant from the Federal Railroad Administration (FRA) under an IIJA funding programme.

Several long-term trends continue to influence the relationship between road and rail freight transportation in the United States. Decarbonisation initiatives, supply chain resilience concerns and growing congestion around major metropolitan areas and ports have encouraged increased interest in rail and intermodal transportation. As a general matter, rail offers lower greenhouse gas emissions per ton-mile than trucking and is increasingly viewed as an important component of corporate sustainability strategies.

At the same time, trucking remains the dominant freight mode due to its flexibility, speed and ability to provide first-mile and last-mile delivery services. As a result, most observable modal shifts have occurred through increased use of intermodal transportation rather than direct substitution of rail for trucking. Many shippers are seeking to combine rail for long-haul movements with trucking for local distribution in order to balance cost, reliability and environmental objectives.

Supply chain reconfiguration has also influenced transportation patterns. Nearshoring initiatives, particularly in Mexico, have increased freight movements through southern border crossings and strengthened the importance of north-south freight corridors. Similarly, continued population growth in the Southeast and Southwest has increased demand for transportation infrastructure serving logistics hubs, distribution centres and manufacturing facilities.

The United States does not have a single comprehensive statute governing freight road and rail transportation. Instead, the regulatory framework is divided among federal, state and local laws. Federal law primarily governs interstate transportation, safety, environmental review, competition, rail economics and the use of federal transportation funding, while state law governs many aspects of infrastructure ownership, procurement, concessions, tolling and project delivery.

For road transportation, key federal statutes include Title 23 of the United States Code governing federal-aid highways, the IIJA, the National Environmental Policy Act (NEPA), and various federal motor carrier safety statutes administered by the Federal Motor Carrier Safety Administration (FMCSA). Tolling authority for federally assisted highways is also governed by federal law, although toll road development and concession arrangements are primarily authorised under state legislation.

For rail transportation, the principal federal statutes include the Interstate Commerce Act, as amended, the Federal Railroad Safety Act, the Rail Transportation Improvement Act, and various provisions administered by the FRA and the Surface Transportation Board (STB). Rail projects receiving federal funding may also be subject to requirements administered by the Federal Transit Administration (FTA).

Because transportation infrastructure is largely owned and managed at the state and local levels, state-specific legislation remains particularly important for project development.

Regulatory responsibility for freight transportation is divided among numerous federal, state and local agencies.

At the federal level, the Federal Highway Administration (FHWA) oversees federal highway programmes and funding. The FMCSA regulates commercial motor carrier safety, driver qualifications and hours-of-service requirements. The FRA regulates railroad safety, equipment, operations and infrastructure standards. The STB serves as the primary economic regulator for freight railroads and oversees matters such as rail line construction, abandonment, mergers and certain access disputes.

Additional federal agencies may become involved depending on the nature of a project. The FTA administers transit funding programmes, the Environmental Protection Agency (EPA) oversees environmental compliance, and the US Army Corps of Engineers frequently participates in permitting decisions affecting transportation infrastructure.

State departments of transportation own and manage major road infrastructure, administer state transportation programmes and oversee procurement and concession processes. State transportation agencies also frequently serve as counterparties to P3 concession agreements. Toll authorities, transportation commissions, port authorities and regional transportation agencies may exercise additional authority depending on the jurisdiction.

In most jurisdictions, local governments retain responsibility for local roads, zoning approvals, utility co-ordination and certain permitting functions. Co-ordination among federal, state and local authorities remains one of the principal causes of project delay in large transportation procurements.

Recent developments in the US transportation sector have been driven more by funding initiatives and administrative reforms than by comprehensive legislative restructuring. The most significant recent development remains implementation of the IIJA, which continues to support investment in highways, bridges, freight corridors, rail infrastructure, ports and intermodal facilities.

At the federal level, agencies have focused on accelerating project delivery, streamlining environmental reviews and improving co-ordination among permitting authorities. These efforts reflect continuing concerns regarding the time required to advance large transportation projects from planning to construction. Federal agencies have also placed increased emphasis on resilience, sustainability, environmental justice and climate-related considerations in transportation planning and investment decisions.

Historically, many surface transportation projects have been partially funded through the issuance of tax-exempt private activity bonds (PABs). The right to issue these bonds with respect to surface transportation projects is allocated by the US Department of Transportation (USDOT). These funds have been critical to the success of US managed lanes and other tolled facilities over the last 15 years. USDOT’s remaining allocable funds are limited, and both investors and state agencies hope for an increase in such allocation from Congress in autumn 2026.

At the state level, a number of jurisdictions continue to evaluate modifications to their P3 frameworks in order to attract private investment and improve project delivery. While no uniform national trend has emerged, states with active transportation programmes continue to refine procurement procedures, unsolicited proposal processes and concession frameworks to enhance market participation and financing flexibility.

The transportation sector is also experiencing increased regulatory attention relating to cybersecurity, supply chain resilience, autonomous vehicle technology and alternative fuels. Although many of these initiatives remain under development, they are expected to play a growing role in transportation regulation and infrastructure investment decisions over the coming years.

The licences, permits and authorisations required to provide freight transportation services in the United States vary depending on the mode of transportation and the nature of the operations.

For trucking operations engaged in interstate commerce, operators must obtain operating authority from the FMCSA, register with USDOT and comply with applicable vehicle registration, insurance and safety requirements. Additional registrations may be required for the transportation of hazardous materials, oversized loads or specialised cargo. Intrastate operations may also be subject to state-specific licensing requirements.

For rail transportation, freight rail carriers operate pursuant to authority issued or regulated by the STB. Construction of new rail lines, acquisition of rail assets and certain operational changes may require STB approval. Rail operators must also comply with FRA safety regulations and applicable environmental requirements.

Where freight transportation services are provided pursuant to a concession or P3 arrangement, the concessionaire typically requires contractual authorisation from the relevant public authority in addition to any applicable regulatory approvals. In the road sector, this often takes the form of a long-term concession agreement entered into under state P3 legislation.

Applicants seeking authority to operate freight transportation services must demonstrate compliance with applicable financial, technical and safety requirements.

In the trucking sector, FMCSA regulations require carriers to maintain minimum levels of financial responsibility, satisfy insurance requirements and demonstrate compliance with safety regulations. Operators are also expected to maintain appropriate management controls, driver qualification programmes, vehicle maintenance systems and safety monitoring procedures. Additional requirements apply to carriers transporting hazardous materials.

Rail operators are subject to extensive FRA safety regulations covering equipment, personnel, operations, training and maintenance. Railroads must maintain safety management programmes and demonstrate the operational capability necessary to conduct rail services safely and efficiently.

For concession and P3 projects, procurement authorities often impose significantly broader qualification requirements. Best practices require bidders to demonstrate experience delivering comparable infrastructure projects, financial capacity, access to funding, technical expertise and operational capability. Major transportation procurements frequently involve detailed pre-qualification processes designed to evaluate the bidder’s ability to finance, construct, operate and maintain the asset over the life of the concession.

Cabotage restrictions apply in the US transportation sector and limit the ability of foreign operators to conduct domestic transportation services.

In the trucking sector, foreign carriers are permitted to transport freight into and out of the United States pursuant to applicable international agreements but are restricted from transporting freight solely between points within the United States. As a result, domestic freight movements must be performed by carriers holding the appropriate US operating authority.

Cross-border trucking operations involving Canada and Mexico are governed by a combination of federal law, international agreements and regulatory requirements administered by US agencies. Operators must satisfy safety, customs, immigration and transportation requirements applicable to cross-border commerce.

Rail transportation operates under a different framework. Freight railroads routinely participate in international transportation movements involving Canada and Mexico through interconnected rail networks. Cross-border rail operations are subject to customs requirements, security regulations and applicable STB and FRA oversight. In practice, cross-border rail transportation is generally facilitated through co-ordination among rail carriers operating within each jurisdiction rather than through unrestricted foreign operation of domestic rail services.

The duration and transferability of operating authorisations depend on the nature of the authorisation and the regulatory framework under which it was issued.

Motor carrier operating authority remains effective so long as the carrier continues to satisfy applicable regulatory requirements, including insurance, registration and safety obligations. Rail operating authority similarly may continue indefinitely, subject to ongoing compliance with regulatory requirements and applicable approvals for significant operational changes.

In mergers and acquisitions, transportation-related licences and operating authorities are not always automatically transferable. Regulatory approvals, notifications or amendments may be required depending on the nature of the transaction and the applicable regulatory regime. Rail transactions in particular may require review by the STB where control of a rail carrier is being transferred.

Operating authority may be suspended, restricted or revoked for failure to comply with applicable laws and regulations. Common grounds include safety violations, failure to maintain required insurance coverage, fraudulent conduct, repeated regulatory non-compliance or failure to satisfy financial responsibility requirements. Concession rights may also be terminated or subject to default remedies under the terms of the applicable concession agreement. In the P3 context, concession agreements provide detailed provisions addressing default, cure rights, lender step-in rights and termination compensation.

Ownership and management of transportation infrastructure in the United States vary by asset type and jurisdiction. Most public roads, highways and bridges are owned by state departments of transportation, toll authorities, transportation commissions or local governments. Interstate highways are primarily owned and maintained by state transportation agencies, although federal funding often supports their development and improvement.

Road P3 projects do not involve the transfer of underlying ownership of the infrastructure. Instead, the public authority retains ownership while granting a private concessionaire the right to design, construct, finance, operate and maintain the asset pursuant to a long-term concession agreement. Upon expiration or termination of the concession, operational responsibility reverts to the public authority.

The rail sector presents a different ownership model. Unlike many jurisdictions, most freight rail infrastructure in the United States is privately owned. Major freight railroads own and operate extensive rail networks and control both infrastructure and transportation services. Passenger rail services frequently operate over infrastructure owned by freight railroads, although certain passenger rail corridors and transit systems are publicly owned.

Unlike many European jurisdictions, the United States does not require structural separation between rail infrastructure ownership and train operations.

In the freight rail sector, the major Class I railroads own, maintain and operate their networks. Infrastructure ownership and transportation services are therefore vertically integrated. This model has historically been viewed as supporting investment in rail infrastructure and operational efficiency, although it occasionally gives rise to disputes regarding access and competition.

Passenger rail services frequently operate under different arrangements. Amtrak, commuter rail operators and public transit agencies often utilise infrastructure owned by freight railroads pursuant to negotiated access agreements. Certain publicly owned passenger rail corridors also exist, particularly in urban and regional transit systems.

Because the United States does not mandate open-access rail operations, access rights are governed primarily by federal law, regulatory oversight and commercial agreements rather than a comprehensive infrastructure access regime. As a result, rail projects often require extensive negotiation with host railroads regarding capacity, dispatching, maintenance responsibilities and operational priorities.

Access rights and charging mechanisms differ substantially between road and rail infrastructure.

Road infrastructure is available for public use on a non-discriminatory basis. Access charges arise only where toll facilities are involved. Toll rates are established pursuant to applicable statutes, concession agreements, financing documents and regulatory requirements. In P3 projects, toll-setting authority may be retained by the public authority or delegated to the concessionaire depending on the transaction structure.

Rail access is governed through a combination of federal regulation and commercial arrangements. Freight railroads control access to their privately owned networks and negotiate operating rights, trackage rights and other access arrangements with other carriers. The STB retains authority to address certain access disputes and competitive concerns, although commercial negotiation remains the primary mechanism for establishing access rights.

Access charges in the rail sector are therefore usually commercially negotiated rather than established through a comprehensive regulatory tariff system.

Toll road concessions are primarily governed by state law and represent the most mature form of transportation P3 in the United States. States including Virginia, Texas, Florida, Georgia, Tennessee, Colorado and Maryland have developed legislative frameworks that permit long-term concession agreements for transportation infrastructure.

Most US toll road concessions fall into two principal categories. Under a revenue-risk concession, the concessionaire finances the project and is repaid primarily through toll revenues. Examples include the I-66 Express Lanes, SR 400 Express Lanes, I-495 Express Lanes, LBJ Express, North Tarrant Express and Elizabeth River Tunnels projects. Under an availability-payment concession, the public authority retains toll revenues and compensates the concessionaire based on facility availability and performance. Examples include the I-595 Corridor Improvements Project, Port of Miami Tunnel and Central 70 Project.

Concession agreements allocate responsibility for design, construction, financing, operations and maintenance while establishing detailed performance standards, handback requirements, change-in-law protections, lender rights and termination compensation mechanisms. Concession terms commonly range from approximately 30 to 75 years depending on the project’s financing requirements and risk allocation structure.

From an investor perspective, the United States toll road market remains one of the most developed transportation P3 markets globally, although activity is concentrated in a relatively small number of states with established statutory authority and political support for private-sector participation.

Major transportation expansions and infrastructure upgrades require a combination of federal, state and local approvals. The specific approvals depend on the nature of the project, its location and the sources of project funding.

Projects involving federal funding, federal permits or federal approvals are subject to review under the NEPA. Additional approvals may be required under the Clean Water Act, Endangered Species Act, National Historic Preservation Act and other environmental statutes. Rail projects may also require approvals from the FRA, STB or FTA, depending on the project structure.

State transportation agencies frequently require separate design approvals, permitting reviews and procurement authorisations. Local governments may also play an important role through zoning approvals, utility co-ordination, roadway permits and community planning processes.

The most significant obstacles to transportation expansion are often environmental review requirements, right-of-way acquisition, utility relocation, permitting timelines, funding limitations and community opposition. In urban areas, securing additional land can be particularly challenging.

Rail projects frequently face additional complexities associated with freight railroad co-ordination, operational impacts, and negotiations regarding access to existing infrastructure. For both road and rail projects, obtaining necessary approvals often represents one of the most significant schedule and development risks.

Public procurement for transportation infrastructure in the United States is governed by a combination of federal, state and local laws. There is no single national procurement code. Instead, procurement requirements depend largely on the procuring authority, funding sources and applicable state legislation.

For projects receiving federal assistance, agencies must comply with federal requirements relating to competition, conflicts of interest, disadvantaged business enterprise participation, civil rights and grant administration. State and local procurement rules continue to apply, provided they are consistent with applicable federal requirements.

Road P3 procurements are conducted pursuant to state-specific P3 legislation. These statutes establish procurement procedures, approval requirements, evaluation criteria and contracting authority for long-term concession arrangements.

Competitive procurement remains the dominant approach for major transportation projects. Most transportation agencies utilise a two-stage procurement process consisting of a request for qualifications (RFQ) followed by a request for proposals (RFP).

Under the RFQ stage, agencies evaluate the technical, operational and financial capabilities of prospective bidders and establish a shortlist of qualified teams. The RFP stage involves detailed technical proposals, financing plans, commercial terms and contract negotiations. For complex transportation projects, agencies frequently engage in confidential discussions and iterative proposal development before selecting a preferred bidder.

Many state P3 statutes also permit unsolicited proposals. In most cases, the public authority must provide notice and an opportunity for competing proposals before proceeding with negotiations. Although unsolicited proposals remain an important feature of certain state P3 programmes, most major transportation concessions continue to be procured through structured competitive processes.

Transportation procurements are typically awarded based on a combination of technical, financial and commercial criteria rather than solely on price.

Evaluation factors commonly include technical design quality, construction approach, lifecycle maintenance plans, operational capabilities, project schedule, financing certainty, risk allocation, safety performance and overall value to the public authority. In P3 procurements, particular emphasis is often placed on the bidder’s ability to manage long-term lifecycle risks and secure committed financing.

Public authorities frequently conduct value-for-money analyses and public interest assessments before awarding major concession agreements. These evaluations seek to determine whether private-sector participation provides measurable benefits compared to traditional public delivery methods.

Contract durations vary significantly depending on the project structure and delivery model. Traditional design-build contracts terminate upon completion of construction, whereas concession agreements frequently extend for several decades.

Road P3 concessions commonly range from approximately 30 to 75 years. Availability-payment concessions fall towards the shorter end of that range, while revenue-risk toll concessions often require longer terms to support financing and revenue recovery. Rail concessions and operating agreements vary considerably depending on project scope and operational requirements.

Termination provisions are among the most heavily negotiated aspects of transportation concessions. Agreements address contractor default, authority default, force majeure events, prolonged relief events and changes in law. Compensation mechanisms seek to balance protection of public interests with lender requirements and investor expectations. Modern concession agreements also commonly include lender step-in rights and cure periods designed to preserve project continuity.

Unsuccessful bidders may challenge transportation procurement decisions through administrative, judicial or statutory protest procedures. The availability and scope of remedies depend on the applicable procurement framework and governing law.

Bid protests frequently focus on alleged violations of procurement procedures, unequal treatment of bidders, conflicts of interest or evaluation errors. Courts and administrative bodies afford significant discretion to procurement authorities, particularly where evaluations involve technical judgements and complex infrastructure projects.

Available remedies may include reconsideration of the procurement decision, corrective procurement procedures, injunctions or, in limited circumstances, monetary relief. In practice, transportation agencies seek to structure procurements carefully in order to minimise litigation risk and avoid delays to project delivery.

Transportation infrastructure projects in the United States are financed through a combination of public funding, private capital and federal credit support. Financing structures vary depending on the nature of the project, the revenue model and the applicable procurement framework.

For road P3 projects, financing consists of a combination of sponsor equity, commercial bank debt, private placements, tax-exempt PABs and federal credit assistance. The Transportation Infrastructure Finance and Innovation Act (TIFIA) programme remains one of the most important financing tools for large transportation projects because it provides long-term subordinated financing on favourable terms.

Traditional publicly financed projects rely on appropriated funds, federal grants, state transportation revenues, municipal bonds or dedicated tax revenues. Rail projects frequently utilise a greater proportion of public funding than toll road projects due to the absence of dedicated user-fee revenue streams.

Rolling stock, locomotives and commercial vehicle fleets are commonly financed through a combination of secured debt, leasing arrangements, equipment trust structures and operating cash flows.

Freight railroads frequently utilise equipment financing, secured lending and lease arrangements for locomotives and railcars. The substantial useful life of rail equipment supports long-term financing structures. Public transit agencies often finance rolling stock through municipal debt, federal grants and lease arrangements.

Commercial trucking fleets are commonly financed through secured equipment loans, fleet leasing programmes and manufacturer-supported financing arrangements. Fleet financing structures are designed to align repayment obligations with vehicle utilisation and replacement cycles.

Leasing structures are widely used throughout the transportation sector. Operating leases, finance leases and sale-and-leaseback transactions are common for both rail and trucking assets.

The freight rail industry has long relied on railcar leasing companies and equipment lessors to provide rolling stock. Similar arrangements are prevalent in the trucking sector, where carriers frequently lease vehicles rather than purchase them outright.

By contrast, public rolling stock companies of the type commonly seen in certain European jurisdictions play a relatively limited role in the United States. Rolling stock ownership structures tend to be more decentralised and commercially driven.

Green and sustainable financing has become increasingly important in transportation infrastructure projects. Investors, lenders and public agencies are placing greater emphasis on sustainability objectives, emissions reductions and climate resilience.

Green bonds, sustainability-linked loans and ESG-focused financing products are increasingly utilised for transportation projects involving electrification, public transit improvements, charging infrastructure and emissions reduction initiatives. Rail projects frequently benefit from sustainability-focused financing due to rail’s comparatively favourable emissions profile.

Although sustainable financing remains a growing segment rather than the dominant source of transportation funding, environmental considerations increasingly influence financing structures, investor participation and project evaluation criteria.

Government support plays a central role in many transportation projects, particularly where user revenues alone are insufficient to support project financing.

Availability-payment structures are widely used in US transportation P3 projects. Under these arrangements, the public authority makes periodic payments to the concessionaire based on facility availability and performance rather than traffic volumes. Examples include New York’s Goethals Bridge project, Colorado’s Denver Eagle project and Maryland’s Purple Line project.

Risk allocation varies depending on project structure. Construction risk, operating risk and lifecycle maintenance risk are commonly transferred to private concessionaires. Demand and revenue risk may either be transferred to the private sector through toll concessions or retained by the public authority through availability-payment models. The allocation of revenue risk remains one of the principal distinctions between major US transportation P3 structures.

Transportation transactions are subject to generally applicable US antitrust laws and merger control requirements. Significant acquisitions involving transportation operators, infrastructure owners or logistics companies may require review under the Hart-Scott-Rodino Act by the US Department of Justice or the Federal Trade Commission.

Rail mergers are subject to an additional layer of review by the STB. The STB evaluates rail transactions under standards that consider competition, service impacts and broader public interest considerations.

Given the strategic importance of transportation infrastructure, large transactions frequently receive substantial regulatory scrutiny, particularly where consolidation may reduce competition or affect critical freight corridors.

Access disputes and allegations of anti-competitive conduct are addressed through a combination of antitrust law, sector-specific regulation and contractual rights.

In the rail sector, the STB possesses authority to address certain competitive concerns involving rail service, access and rates. While US freight railroads are typically vertically integrated and control access to their networks, regulatory mechanisms exist to address unreasonable practices and certain competitive issues.

Road infrastructure presents fewer access-related competition concerns because public roads are available on a non-discriminatory basis. Competition issues in the road sector are therefore more likely to arise in connection with transportation services, logistics operations or mergers rather than infrastructure access.

Unlike the European Union, the United States does not maintain a comprehensive state aid regulatory regime. Federal, state and local governments may provide grants, subsidies, tax incentives, credit assistance and other forms of support for transportation projects.

Such assistance is evaluated under constitutional, statutory and procurement principles rather than a dedicated state aid framework. Federal transportation programmes routinely provide significant financial support for infrastructure development through grants, loans and credit enhancement mechanisms.

Government support nevertheless remains subject to various legal constraints, including appropriation requirements, procurement rules, and conditions attached to federal funding programmes.

Vertical integration is widely accepted within the US transportation sector. The freight rail industry provides the most prominent example, as major railroads own infrastructure, operate trains and provide transportation services through integrated business models.

Regulators have historically viewed vertical integration as a defining characteristic of the US freight rail system rather than a competition concern in itself. Regulatory scrutiny focuses on specific anti-competitive conduct, access disputes or merger-related issues rather than requiring structural separation between infrastructure ownership and transportation operations.

In the road sector, vertical integration issues arise less frequently because infrastructure is publicly owned and transportation services are provided by numerous private operators. P3 concession structures also involve regulatory oversight and contractual controls designed to protect public access and service objectives.

Heavy-duty vehicles are subject to emissions standards administered by the EPA, including requirements regarding greenhouse gases and “criteria pollutants” (six air pollutants regulated by the EPA under the Clean Air Act), while locomotives are regulated under separate EPA emissions standards applicable to rail equipment. States, particularly California and jurisdictions adopting California standards, may impose additional requirements that significantly influence vehicle and equipment procurement decisions throughout the transportation sector.

In general, the United States relies on incentives rather than mandates to promote electrification and alternative fuels. Federal and state programmes support electric vehicle deployment, charging infrastructure, hydrogen development, low-emission vehicles and clean transportation technologies. While trucking electrification is receiving significant policy attention, rail decarbonisation efforts currently focus on fuel efficiency improvements, battery technologies, renewable fuels and emerging hydrogen applications.

Transportation infrastructure projects frequently require environmental approvals under the NEPA, the Clean Water Act, the Endangered Species Act, the National Historic Preservation Act and various state environmental laws. Major projects often require multiple permits and agency approvals, making environmental review one of the most significant factors affecting project development schedules.

The United States does not currently maintain a nationwide carbon pricing regime. However, certain states operate cap-and-trade or similar programmes, and public companies increasingly face investor-driven ESG reporting expectations. Transportation agencies and infrastructure sponsors are also incorporating climate-related disclosure, resilience and sustainability considerations into project planning and procurement processes.

Where federal permits, approvals or funding are involved, regulators are usually required to consider environmental impacts through the NEPA process. Agencies evaluate direct, indirect and cumulative impacts, alternatives and mitigation measures before making decisions. Environmental review obligations frequently influence project design, procurement schedules, financing timelines and risk allocation provisions in concession agreements.

Environmental non-compliance may result in administrative penalties, civil fines, injunctive relief, permit suspension, remediation obligations and, in certain circumstances, criminal liability. Transportation project sponsors and operators may also face contractual liabilities, project delays and litigation risks arising from environmental violations or permitting failures.

Road and rail safety are governed primarily at the federal level. The FMCSA regulates commercial motor carrier safety, while the FRA oversees railroad safety, operations, equipment and infrastructure. State agencies supplement federal oversight through enforcement activities, inspections and additional operational requirements.

Major transportation accidents may be investigated by the National Transportation Safety Board, which has authority to investigate significant highway and rail incidents. Federal and state transportation agencies frequently participate in investigations, and findings often influence future regulatory, operational and infrastructure decisions.

Operators are required to report certain accidents, preserve evidence, co-operate with investigations, implement corrective actions and comply with applicable notification requirements. Additional obligations may arise under concession agreements, insurance policies, safety regulations and environmental laws.

Commercial vehicles, rail equipment, signalling systems and transportation infrastructure are subject to extensive technical standards and certification requirements administered primarily by the FMCSA, the FRA and state transportation agencies. Compliance is required throughout design, construction, operation and maintenance phases.

Transportation of hazardous materials is regulated principally by the USDOT through the Pipeline and Hazardous Materials Safety Administration, with additional requirements administered by the FMCSA and FRA. Operators must comply with detailed rules governing packaging, labelling, routing, training, documentation, security and emergency response.

Motor carriers, railroads and concessionaires are required to maintain specified levels of insurance coverage. Liability exposure varies depending on the applicable legal framework, and the United States does not impose comprehensive statutory liability caps on transportation operators, although contractual limitations and sovereign immunity principles may affect recovery in certain circumstances.

Passenger rail liability is subject to a specialised federal framework. Intercity passenger rail operators, including Amtrak, are subject to a statutory aggregate liability cap for claims arising from a single rail passenger accident or incident. Passenger rail projects also involve extensive contractual risk allocation among infrastructure owners, host freight railroads, operators, rolling stock providers and public authorities. Consequently, liability exposure is often determined by a combination of federal statutory provisions, state tort law, contractual indemnities, insurance programmes and self-insurance arrangements. Negotiation of liability and indemnification provisions remains a critical aspect of passenger rail project development, particularly where passenger services operate on freight railroad infrastructure.

Transportation workers are subject to numerous sector-specific regulations, including federal safety requirements, driver qualification standards, railroad labour laws and operational rules governing transportation personnel. These requirements supplement applicable federal and state employment laws.

Collective bargaining remains particularly significant in the rail industry, where union representation is widespread and labour relations are governed largely by the Railway Labor Act. Union participation is less extensive in the trucking sector, although collective bargaining remains important in certain regions and transportation segments.

The United States does not have a direct equivalent to the transfer-of-undertakings protections commonly found in many other jurisdictions. Employment treatment following concession transfers depends largely on contractual arrangements, collective bargaining agreements and applicable labour laws, although transportation procurements frequently address workforce transition issues.

Driver hours-of-service requirements are regulated by the FMCSA, while rail employee hours are governed by federal railroad safety laws and FRA regulations. These rules are intended to reduce fatigue-related incidents and are enforced through inspections, audits and operational oversight.

Labour shortages continue to affect portions of the transportation sector, particularly trucking, construction, skilled trades and certain rail occupations. Workforce constraints have contributed to increased labour costs, project delivery challenges and greater emphasis on workforce development initiatives.

Strikes and other labour actions are subject to federal labour laws, including the Railway Labor Act in the rail sector. Because transportation services are considered critical to interstate commerce, labour disputes frequently involve extensive mediation, regulatory oversight and, in some circumstances, federal intervention.

Commercial vehicles must be registered and comply with applicable federal and state requirements, while rail equipment is subject to FRA safety standards and railroad operating requirements. Registration, inspection and certification obligations vary depending on the equipment and intended use.

The United States relies on nationally applicable technical standards rather than regional interoperability regimes. Rail interoperability is facilitated through industry standards, FRA regulations and commercial co-ordination among railroads, while vehicle standards are largely established at the federal level.

Leasing is common throughout the transportation sector, and repossession rights are governed by contract law, secured transactions principles and applicable bankruptcy laws. Lenders and lessors benefit from well-developed legal protections for transportation equipment financing.

Federal regulations impose extensive inspection, maintenance and recordkeeping obligations for commercial vehicles, locomotives, railcars and rail infrastructure. Failure to comply may result in enforcement actions, operational restrictions and liability exposure.

Autonomous vehicle regulation continues to evolve through a combination of federal guidance and state legislation. Autonomous rail technologies remain less developed but are receiving increasing attention, particularly in connection with automation, signalling systems and operational efficiency initiatives.

Digital freight platforms are regulated through existing commercial, competition, transportation and consumer protection laws rather than transportation-specific digital platform legislation. Regulatory focus has primarily centred on transparency, competition and operational compliance.

The United States does not have a comprehensive national data protection law comparable to the European Union’s GDPR. Instead, transportation operators must comply with a combination of federal, state and sector-specific privacy requirements, including significant state privacy legislation.

Cybersecurity requirements are becoming increasingly important for transportation operators and infrastructure owners. Federal agencies have issued cybersecurity guidance and requirements for critical infrastructure, and transportation agencies incorporate cybersecurity obligations into procurement and concession agreements.

AI-driven traffic management systems, intelligent transportation systems and advanced signalling technologies are regulated through existing transportation, safety and procurement frameworks. Regulatory attention is increasing as these technologies become more prevalent in transportation networks.

Ownership and use of transportation-related data are determined by contract, applicable privacy laws and regulatory requirements. Now more than ever, public agencies require access to operational data in concession arrangements, although comprehensive open-data obligations remain relatively limited.

Cross-border transportation is influenced by a range of international agreements involving the United States, Canada and Mexico, including trade agreements, customs arrangements and transportation-specific regulatory frameworks that facilitate freight movements across North American supply chains.

Foreign investment in transportation infrastructure is permitted, although certain transactions may be subject to national security review by the Committee on Foreign Investment in the United States (CFIUS). Transportation assets that are considered critical infrastructure may receive heightened scrutiny.

Transportation operators must comply with US sanctions programmes, export controls and trade restrictions administered by federal agencies. These requirements can affect routing decisions, counterparties, cargo movements and project participation.

Cross-border road and rail freight is primarily regulated by US Customs and Border Protection. Key requirements include customs declarations, security filings, inspections, and compliance with applicable import and export controls.

Nearshoring, reshoring and broader supply chain diversification strategies have increased the importance of transportation corridors connecting the United States with Mexico and Canada. These trends are supporting investment in freight highways, rail corridors, intermodal facilities and border infrastructure.

Differences in regulatory requirements, customs procedures, infrastructure capacity and operational practices can create integration challenges across jurisdictions. Nevertheless, the highly interconnected North American transportation network supports efficient cross-border freight movements.

Transportation disputes may be heard in federal or state courts depending on the nature of the claim. Certain rail-related matters also fall within the jurisdiction of the STB, while regulatory enforcement proceedings may be conducted before administrative agencies.

Arbitration, or other alternative dispute resolution mechanisms (such as dispute resolution boards), is common in transportation concession agreements, major construction contracts, financing documents and commercial operating arrangements. Long-term P3 agreements frequently include multi-tiered dispute resolution procedures combining negotiation, expert determination and arbitration.

Regulatory decisions may be challenged through administrative review procedures and, where permitted, judicial review. The applicable process depends on the agency involved and the statutory framework governing the decision.

Customers may challenge rates, service levels and contractual performance through litigation, administrative complaints, regulatory proceedings or contractual dispute resolution mechanisms. Rail customers may also seek relief through certain STB processes.

Limitation periods vary by state and by claim type, with contractual claims commonly subject to limitation periods ranging from three to six years and tort claims often subject to shorter periods. Class actions and other forms of mass litigation are permitted and can arise in transportation, environmental and accident-related contexts.

Autonomous trucking presents legal questions relating to safety regulation, liability allocation, insurance, cybersecurity and workforce impacts. While deployment remains limited, regulators and industry participants are actively evaluating frameworks to support future commercial adoption.

Hydrogen-powered transportation remains at an early stage of development in the United States. Existing regulatory frameworks apply, although federal and state governments are increasingly supporting pilot projects, research initiatives and infrastructure development relating to alternative propulsion technologies.

Transportation agencies are placing increasing emphasis on resilience planning, particularly with respect to flooding, severe weather, sea-level rise and extreme heat. Climate resilience considerations are becoming more prominent in project planning, environmental review, procurement and infrastructure design.

Congestion pricing, managed lanes, tolling and low-emission transportation policies are primarily governed at the state and local levels. While approaches vary significantly among jurisdictions, growing urban congestion and sustainability objectives are expected to drive continued experimentation with pricing and demand-management tools, particularly in major metropolitan areas.