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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.

Post: If your question has not already been posted, use the “Type your technical question” box at the bottom of the page to enter your question.
  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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  4. When finished, select “Post idea.” If you registered, you will be able to track responses to your post. Please include only one question or comment per post to help us keep the forum organized.
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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90 results found

  1. Communication technology stack flexibility

    The topic mentions "ready-to-implement secure V2X communication (such as C-V2X (5G/4G/LTE), Satellite, etc.) or other communication technologies." Is there a preference among these, or is the choice left to the proposer? Are proposals using novel or proprietary communication mechanisms (provided they meet documented latency and security requirements) considered responsive?

    1 vote

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  2. Hardware-in-the-loop testbed expectations

    Phase I requires hardware-in-the-loop simulation testing. Are commercial HIL platforms (e.g., dSPACE, NI VeriStand, CARLA + ROS2) acceptable, or does DOT have a preferred testbed? Is virtual-only simulation acceptable in cases where the architecture is purely software / firmware, or is physical hardware integration required for Phase I?

    1 vote

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  3. Phase I human factors testing depth

    Phase I deliverables include "human-centric design" and human factors testing of advisory messaging. Is the expected depth a small-N usability study within the proof-of-concept (e.g., 5 to 10 participants for comprehension testing), or a statistically powered human factors experiment? Approximately what budget allocation does DOT expect for the human factors component within the Phase I budget cap?

    1 vote

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  4. Phase II agency commitment level and timing

    Phase II requires "at least one state or local agency committed to provide access to live traffic data." At what stage is that commitment expected, and at what level? Is a Letter of Intent or MOU at Phase I proposal time sufficient, or must a binding partnership agreement be in place at Phase II proposal time?

    1 vote

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  5. New infrastructure deployment

    The topic encourages leveraging existing infrastructure (legacy fixed-point detectors, RSUs, third-party feeds). Are proposals deploying new sensing infrastructure (e.g., next-generation roadside units with multi-modal sensing) considered responsive, provided they are designed to interoperate with existing legacy data and fit within the Phase I budget envelope?

    1 vote

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  6. Multi-agent coordination scope

    Topic uncertainty #5 names "how to seamlessly coordinate between multiple local-AI agents to achieve network-wide benefits" as an open question. Does this include sender-side coordination methods (i.e., proactive state propagation between agents before an event), or is the expected scope limited to receiver-side reactive coordination?

    1 vote

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  7. Architecture: edge-distributed mesh vs cloud-edge

    The topic description states "the technical approach envisioned for this SBIR topic aligns with this latter category, which is cloud-edge computing." Would proposals using a fully edge-distributed mesh of perception nodes (with cloud aggregation reserved for non-real-time analytics, model training, and longer-horizon prediction) be considered responsive to this topic, or is a centralized cloud-edge split required?

    1 vote

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  8. Does 26-OS1 include commercial vehicle auction transaction data as a qualifying voluntary industry data stream?

    Would a system integrating NHTSA VIN-level recall data with auction house vehicle transaction data — flagging open safety recalls at point of commercial transfer before retail re-entry — represent the Trusted Intermediary architecture and proactive safety indicator use case envisioned by this topic?

    1 vote

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  9. Would a human-centered safety communication system that generates real-time visual warning signals (based on braking behavior and environmen

    The system I am developing focuses on proactive accident prevention by providing immediate, human-visible signals to surrounding drivers and pedestrians.

    In addition to visual signaling, the system integrates environmental awareness (e.g., stop sign detection via GPS) to anticipate potential risk situations and provide advance warning.

    I would like to understand whether such human-generated and behavior-based signaling systems can be recognized as a valid input or complementary component within predictive safety analytics frameworks.

    2 votes

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  10. Does predictive safety include human-visible communication systems designed to prevent accidents before driver reaction?

    I am developing a predictive human-centered safety communication system that provides a forward-facing visual signal activated during braking to improve awareness for oncoming drivers and pedestrians.

    In addition, the system is being expanded to include:

    • an amber-colored signal for regulatory compatibility,

    • a fully cordless, solar-powered design,

    • and GPS-based detection of stop signs to provide advance warning signals to drivers.

    Given that this approach is based on human-visible communication rather than AI-based analytics, I would like to confirm whether such a system falls within the scope of predictive safety analytics for this topic.

    1 vote

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