Transportation Digital Infrastructure (TDI) is entering a new era of advancement; the industry is transitioning from theoretical conversations and research-led pilots to field pilot projects, grants, and dedicated programming focused on operational decision-making for connected, data-driven transportation systems. While TDI has been championed by a collaboration of the public and private sectors the U.S. Department of Transportation (USDOT) is taking more of a leading role in aspects of this shift, including reframing how TDI is defined, funded, and deployed across all modes of transportation.
USDOT broadly defines digital infrastructure as collective public and private technology assets that create, exchange, and use data to improve transportation systems for travelers, businesses, and agencies. These assets include physical devices, software systems, security credentials, and the institutional processes that govern how data moves and is trusted. Additionally, with this shift, agencies are expanding the focus of TDI to the broader data ecosystem: vehicles, devices, communication networks, data standards, cloud platforms, and governance structures.
Through adoption of TDI, agencies will be able to meet transportation objectives that support safety, mobility, and efficiency across all modes of transportation. Some of these objectives include vehicle-to-everything (V2X) safety applications, work zone data exchange (WZDx) data feeds, accessibility tools, automated vehicle readiness, and freight optimization.
This transition provides practical and operational opportunities for agencies as they will need to depend less on individual devices/systems and more on how all these components will work together. Investments that fail to account for standards alignment, cybersecurity, and data governance will risk incompatible assets and noncompliance with future mandates or industry standards.
This article explores USDOT’s TDI focus areas, including road impacts, state-to-state operability, and truck parking availability, and how agencies are advancing these solutions, while drawing on tools, data platforms, and technical expertise to support implementation.
USDOT’s TDI Focus Area 1: Road Impacts
Road impacts, including open and closed status, weather conditions, vehicle restrictions, and work zones, directly influence safety, mobility, and reliability across the transportation system. When this information is incomplete, inconsistent, or delayed, travelers and operators are left to make decisions without full situational awareness, increasing the risk of crashes, delays, and inefficiencies. TDI is helping agencies modernize how road impact data is collected, managed, and shared, transforming disparate data sources into trusted, real‑time information. By enabling standardized data exchange and coordinated system operations, agencies can improve internal decision‑making while delivering clearer, more consistent communications to the traveling public.
One increasingly important method of communicating road impacts is through connected vehicle (CV) technology. Connected vehicles use wireless communications to exchange data between vehicles and roadway infrastructure, enabling safety‑critical and mobility‑enhancing messages to be delivered directly to drivers and vehicle systems. This includes alerts about work zones, adverse weather, roadway restrictions, and incidents ahead, often before those conditions are visible. By shifting road impact information from static signs and passive websites to real‑time, in‑vehicle communications, CV technology supports proactive driving decisions, reduces secondary crashes, and improves overall system efficiency, while laying the foundation for future automated and data‑driven transportation operations.
State transportation agencies are applying connected vehicle and roadway data exchange to modernize how road impact information is shared across systems and partners. Grant-funded initiatives, like the Wyoming Department of Transportation’s federal Strengthening Mobility and Revolutionizing Transportation (SMART) grant project, are demonstrating how standardized, real-time data can support consistent road condition reporting, automated traveler information, and connected vehicle message generation from integrated operational environments. These efforts allow agencies to move away from fragmented, system-specific reporting toward coordinated, scalable approaches that improve situational awareness, support safer operations, and prepare transportation networks for increasingly connected and automated use cases.
USDOT’s TDI Focus Area 2: State-to-State Interoperability
Interoperability is a cornerstone of TDI, enabling transportation agencies to move beyond siloed systems toward coordinated, data‑driven operations. Standards‑based interoperability, particularly through center‑to‑center communications, allows agencies to share situational awareness across jurisdictions, integrate third‑party data, and support consistent messaging to the public. As transportation network become more connected, traffic management centers, maintenance systems, traveler information platforms, and external partners can seamlessly exchange data for timely decision‑making and effective response. This connectivity strengthens system reliability, improves safety outcomes, and allows today’s investments to remain adaptable to future technologies.
Multi-state interoperability initiatives demonstrate how agencies are advancing Transportation Digital Infrastructure through standards-based center-to-center communications and coordinated deployment of connected vehicle technologies. The Connecting the West program, a USDOT-funded collaboration among transportation agencies in Utah, Colorado, and Wyoming is expanding connected vehicle networks to improve interoperability across state lines. Through deployment of traveler information messages, signal preemption and prioritization, and advanced detection technologies, participating agencies are improving real-time situational awareness, supporting coordinated event and incident management, and enhancing safety for drivers, freight operators, and vulnerable road users.
USDOT’s TDI Focus Area 3: Truck Parking Availability
Truck parking is a foundational yet often under‑recognized component of the freight supply chain and the broader transportation system. When safe, reliable parking is unavailable, the impacts ripple across safety, mobility, and economic efficiency contributing to fatigued driving, congestion, inefficient routing, and lost productivity for carriers and shippers alike. As freight demand continues to grow and operating conditions become more complex, the transportation industry is increasingly recognizing truck parking as a transportation digital infrastructure challenge, not just a physical one. Real‑time visibility into parking availability, consistent data standards, and seamless information sharing across jurisdictions are now essential to supporting safer operations and more resilient supply chains.
TDI is working to address these challenges by enabling the data, systems, and interoperability needed to connect drivers, infrastructure owners, and freight operators with timely, actionable information. Improving truck parking through digital infrastructure not only enhances safety and operational efficiency today, but also lays the groundwork for connected, automated, and data‑driven freight systems of the future.
What This Means for the Transportation Industry
As the transportation industry looks ahead, the next phase of progress must focus on scaling integrated, standards‑based digital infrastructure across truck parking, interoperability, and road impact communications. This means moving beyond isolated deployments and toward enterprise solutions that prioritize data quality, system interoperability, and real‑time information sharing across agencies, regions, and modes. Investments in digital platforms, center‑to‑center communications, and connected vehicle readiness will be critical to delivering consistent, trusted information to travelers and freight operators alike.
Across the country, agencies are translating Transportation Digital Infrastructure concepts into operational solutions through connected vehicle deployments, interoperable data platforms, and real-time decision-support systems. Several of these efforts, from roadway impact communications to multi-state interoperability and truck parking availability, are already informing best practices for scalable, standards-based implementation. More detailed examples of how these initiatives are being applied in practice can be found in the related case studies below.
