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U.S. DOT FY 2026 Phase I Pre-Solicitation Q&A



This U.S. DOT Small Business Innovation Research (SBIR) Pre-solicitation Q&A Forum provides small businesses an opportunity to submit clarifying questions on the topics published in the U.S. DOT Fiscal Year (FY) 2026 Phase I Pre-Solicitation. Questions will be answered by the Technical Experts/Topic Authors at the U.S. DOT Operating Administrations during this period. Questions shall be limited to improving the understanding of a particular topic's requirements and should not share proposal ideas nor proprietary information.

The U.S. DOT’s FY 2026 Pre-Solicitation period is April 29, 2026, through May 29, 2026, at 5:00 pm Eastern Time (ET). Only questions posted within this period will be responded to.

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Search: Browse the existing questions by category to find the topic you are interested in and to see if your question has already been addressed. If you see a question, you are also interested in, you can add a vote to the question, or leave a comment.

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  1. Select the research topic your question is related to from the drop-down menu that appears when you begin typing.
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Please note, all comments will be public information. Potential offerors shall not include in the question(s) or comment(s) any information that they do not wish to be made public. Telephone inquiries or meeting requests will not be addressed and may be removed. The U.S. DOT shall not respond to requests for advice or guidance on any offeror’s solution to any SBIR topic and shall not consider any submitted materials other than questions.

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89 results found

  1. For the Phase II MVP software package: does the FTA expect a cloud-hosted SaaS platform accessible via API

    For the Phase II MVP software package: does the FTA expect a cloud-hosted SaaS platform accessible via API (allowing transit agencies and third-party app developers to integrate CLU’s trip orchestration), or a standalone installable application for transit agency self-deployment?

    1 vote

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  2. The topic states the system “necessitates the creation of” new data standards beyond existing ones.

    The topic states the system “necessitates the creation of” new data standards beyond existing ones. For Phase I, does the DOT expect a new data standard to be developed and published, or is identifying the gaps where new standards are needed and proposing their design sufficient as a Phase I contribution?

    1 vote

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  3. For the accessibility requirement, does Phase I require formal WCAG 2.1 AA compliance testing with users with disabilities

    For the accessibility requirement, does Phase I require formal WCAG 2.1 AA compliance testing with users with disabilities, or is an accessibility-first architecture design document with user research (interviews with 5+ disabled riders) sufficient for the Phase I PoC report?

    1 vote

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  4. Phase I Desired Outcomes specify “a proof-of-concept report describing a prototype AI-powered traveler support system”

    Phase I Desired Outcomes specify “a proof-of-concept report describing a prototype AI-powered traveler support system.” Does the Phase I evaluation require a functional software prototype with running code, or is an architecture design with a limited demonstration using archived GTFS data sufficient to constitute the “prototype” described in the report?

    1 vote

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  5. For the “Trusted Intermediary” design, must the Phase I architecture address compliance with a specific federal privacy framework

    For the “Trusted Intermediary” design, must the Phase I architecture address compliance with a specific federal privacy framework (e.g., NIST Privacy Framework, FISMA, CCPA-equivalent), or may proposers define their own privacy protection approach aligned with the spirit of the topic?

    1 vote

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  6. For Focus Area 5 (Comprehensive Health Modeling)

    For Focus Area 5 (Comprehensive Health Modeling), does Phase I require a working model trained on real fleet maintenance records, or is a design of how maintenance and environmental data would be integrated into the predictive model acceptable as a Phase I deliverable?

    1 vote

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  7. The topic references ISO/PAS 8800 and the proposed SELF DRIVE Act of 2026 in its reference list.

    The topic references ISO/PAS 8800 and the proposed SELF DRIVE Act of 2026 in its reference list. Are proposals expected to demonstrate formal compliance with these standards in Phase I, or is an alignment statement showing that the proposed architecture is designed to support these standards sufficient?

    1 vote

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  8. Focus Area 1 describes a “Trusted Intermediary” built on voluntary industry data.

    Focus Area 1 describes a “Trusted Intermediary” built on voluntary industry data. In Phase I, does the DOT expect the architecture to include a functional voluntary consent and data-contribution mechanism, or is a design specification of how such a mechanism would work sufficient?

    1 vote

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  9. Would DOT consider a topic on hardware-level cargo authentication technology for trailers and rail containers?

    Would DOT consider a topic on hardware-level cargo authentication technology for trailers and rail containers? Cargo theft is a multi-hundred million dollar problem in the US and the CORCA bill identified a gap in physical security at the asset level. More advanced authentication locks that operate 100% offline have no current representation in the SBIR portfolio.

    1 vote

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  10. Temporary work-zone congestion

    Does topic 26-FH1 consider temporary work-zone congestion caused by roadway maintenance or robotic maintenance operations to be an acceptable Phase I use case for demonstrating Edge-AI/V2X congestion prediction and mitigation?

    1 vote

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  11. mobile autonomous aerial sensing platform

    Would a mobile autonomous aerial sensing platform be considered an acceptable emerging data source if the proposed system’s main deliverable is an Edge-AI/V2X congestion advisory architecture that detects work-zone or incident-related congestion and delivers location-specific advisories to affected road users and traffic management operators?

    1 vote

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  12. Phase I Desired Outcomes specify “a proof-of-concept system design” and “an initial prototype design"

    Phase I Desired Outcomes specify “a proof-of-concept system design” and “an initial prototype design”. Does the Phase I evaluation require a functional software prototype with running code producing outputs, or is a detailed system design document with a limited simulation scenario (no live data feeds) acceptable as the Phase I prototype?

    1 vote

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  13. For the Desired Outcome “Commercial and Implementation Readiness Assessment"

    For the Desired Outcome “Commercial and Implementation Readiness Assessment”, what constitutes the minimum acceptable evidence of a commercialisation pathway — a Letter of Interest from a single state DOT or logistics partner, or are commitments from multiple stakeholders expected at Phase I?

    1 vote

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  14. For Technical Parameter TP-4 (federated learning)

    For Technical Parameter TP-4 (federated learning): does Phase I require a live multi-party FL deployment involving distinct legal entities sharing model updates, or is a simulated federation — two data partitions on the same infrastructure representing separate jurisdictions — sufficient as a Phase I architecture demonstration?

    1 vote

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  15. Technical Parameter TP-1 requires deploying “low-power edge AI devices at strategic freight bottlenecks.

    Technical Parameter TP-1 requires deploying “low-power edge AI devices at strategic freight bottlenecks.” For Phase I, is a benchtop hardware prototype or hardware-in-the-loop simulation of the edge device sufficient to demonstrate technical feasibility, or does Phase I require actual field deployment at a freight interchange?

    1 vote

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  16. For Technical Parameter TP-3 (synthetic data generation), does the DOT expect the generator to produce freight-domain-specific

    For Technical Parameter TP-3 (synthetic data generation), does the DOT expect the generator to produce freight-domain-specific synthetic trajectories and delay events, or is general-purpose tabular synthetic data augmentation acceptable as a Phase I implementation of this capability?

    1 vote

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  17. 26-FH1: Is a formal agency partnership required for Phase I?

    Is it sufficient to identify candidate state or local transportation agencies and document a plan for engagement, with a formal partnership established at the start of Phase II?

    1 vote

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  18. 1 vote

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  19. Would a cell phone application to detect driver impairment fit under the 26-OS1 topic?

    We are developing a mobile application designed to help assess potential driver impairment (drunk, fatigued, etc.) through a verbal assessment test. The app allows users to securely sign in and answer a series of questions intended to gauge cognitive and verbal indicators of impairment. Based on the user’s responses, the application provides feedback indicating whether the results suggest possible impairment or not.

    1 vote

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  20. 26-FH1

    Does Phase I require physical edge hardware such as an RSU or roadside compute unit as part of the testbed, or is a high-fidelity software simulation environment acceptable as the primary validation platform, provided the system architecture is explicitly designed for transition to physical hardware in Phase II?

    1 vote

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