FY20 Wireless Digital Train Line (WiDTL) for Passenger Trains - Phase III | FR RRD 20 003

Opportunity Information: Apply for FR RRD 20 003

The FY20 Wireless Digital Train Line (WiDTL) for Passenger Trains - Phase III grant opportunity (Funding Opportunity Number: FR RRD 20 003) was a discretionary research grant offered by the U.S. Department of Transportation (DOT), Federal Railroad Administration (FRA), under CFDA 20.313. It was categorized as Science and Technology and other Research and Development, and it focused on advancing rail communications by studying a Wireless Digital Trainline (WiDTL) concept that could serve both passenger and freight rail operations. The central goal was not to deploy a system immediately, but to rigorously investigate whether a wireless alternative could credibly replace or outperform the legacy analog trainline used today for trainline signaling and communications across a train consist.

The project scope emphasized feasibility and technical validation. In practical terms, the research aimed to determine whether a wireless interconnect approach could meet or exceed railroad expectations for robustness (reliability in harsh, real-world operating environments), manageability (the ability to configure, monitor, troubleshoot, and maintain the system effectively at scale), and performance (latency, availability, integrity, throughput, and overall behavior under operational stresses) compared with existing analog trainline systems. Because trainline functions are often tied to safety-critical or mission-critical operations, the opportunity highlighted the need for a solution that is dependable and predictable under conditions such as vibration, electromagnetic interference, high speeds, tunnel and station environments, complex consists, and frequent coupling/uncoupling events.

A key deliverable implied by the description was a structured evaluation of technologies that could enable wireless trainline operation. This included assessing both currently available and emerging communications technologies for their suitability in the rail environment, rather than assuming a single technology is the answer. The opportunity specifically called for comprehensive modeling and computer simulation, meaning the work was expected to go beyond a high-level literature review. Applicants were expected to use analytical tools to model wireless propagation and link behavior around and through railcars, simulate network performance under different operational scenarios, and compare candidate approaches against railroad requirements. This kind of work typically helps identify where wireless approaches are strong (for example, flexible reconfiguration and reduced physical cabling) and where they may struggle (for example, multipath fading around metal car bodies, interference, or ensuring deterministic performance).

Administratively, the grant had a relatively small, targeted scale consistent with a focused research study. The award ceiling was $173,000, with an expectation of one award, indicating a single recipient would likely conduct the Phase III study. The opportunity was created on July 14, 2020, and originally closed on July 21, 2020, reflecting a short application window. Eligibility was listed as "Others" with additional clarification referenced in the opportunity text, suggesting eligibility may have been defined narrowly (for example, specific types of organizations, research entities, or partners) rather than being broadly open to all standard applicant categories.

Overall, this FRA grant opportunity was aimed at moving the WiDTL concept forward through disciplined engineering study: identifying feasible wireless technologies for trainline functions, testing assumptions through modeling and simulations, and measuring whether wireless interconnects can match or exceed the proven characteristics of analog trainlines in real railroad service. The underlying intent was to reduce technical uncertainty and provide evidence-based guidance on whether a wireless digital trainline is practical for passenger trains and potentially adaptable to freight service, while keeping railroad operational, maintenance, and performance requirements at the center of the evaluation.

• The Department of Transportation, DOT - Federal Railroad Administration in the science and technology and other research and development sector is offering a public funding opportunity titled "FY20 Wireless Digital Train Line (WiDTL) for Passenger Trains - Phase III" and is now available to receive applicants.
• Interested and eligible applicants and submit their applications by referencing the CFDA number(s): 20.313.
• This funding opportunity was created on Jul 14, 2020.
• Applicants must submit their applications by Jul 21, 2020 No Explanation. (Agency may still review applications by suitable applicants for the remaining/unused allocated funding in 2026.)
• Each selected applicant is eligible to receive up to $173,000.00 in funding.
• The number of recipients for this funding is limited to 1 candidate(s).
• Eligible applicants include: Others (see text field entitled Additional Information on Eligibility for clarification).

Apply for FR RRD 20 003

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