About this programme
The U.S. Department of Transportation's Small Business Innovation Research (SBIR) program is DOT's share of America's Seed Fund — the government-wide, equity-free R&D funding programme coordinated by the Small Business Administration (SBA). DOT is one of the participating agencies that runs its own annual solicitation rather than a shared central one, and it delegates day-to-day program administration to the Volpe National Transportation Systems Center in Cambridge, Massachusetts, a DOT research center.
DOT SBIR funds early-stage R&D that supports the missions of specific DOT operating administrations. Per SBA's SBIR.gov programme directory, DOT's topics come from the Federal Highway Administration (FHWA), Federal Railroad Administration (FRA), Federal Transit Administration (FTA) and Pipeline and Hazardous Materials Safety Administration (PHMSA) — meaning the program funds transportation-safety, infrastructure, mobility and pipeline/hazmat-safety technology rather than a general-purpose innovation budget.
Like all SBIR funding, the award is a non-dilutive contract or grant: DOT does not take equity in the awardee and the money is not repaid as debt. In exchange, the awarded work must respond directly to one of the specific technical topics DOT publishes in that year's solicitation, not a company's R&D agenda in general.
The program runs on an annual cycle: DOT posts a pre-solicitation notice ahead of the topics being finalized, followed by a formal solicitation window during which proposals are accepted, and then the window closes until the next cycle. As of this writing the official Volpe Center SBIR page is running only a "Subscribe for updates" (GovDelivery) signup for the next solicitation, with no open topics currently listed.
How it works
Phase I funds feasibility work. Per SBA's SBIR.gov programme directory, DOT's Phase I awards go up to $200,000, drawn from an annual DOT SBIR budget on the order of $9 million, scoped to the specific topics published that cycle across FHWA, FRA, FTA and PHMSA.
Phase II funds fuller development of a technology that has already completed Phase I. Only companies that hold a DOT Phase I award are considered for Phase II — it is not a separate open competition that new applicants can enter directly.
The solicitation window is currently closed; the official page directs applicants to a subscribe-for-updates signup rather than listing open dates. Check the official solicitations page directly for the next cycle's pre-solicitation and submission-window dates before assuming any specific timeline.
As with SBIR government-wide, DOT does not fund Phase III directly through the SBIR program — Phase III covers commercialization work that follows on from Phase I/II R&D, pursued through other funding such as follow-on contracts, not a further SBIR award.
Who can apply
Applicants must be for-profit U.S. small businesses that meet SBA's SBIR eligibility standard: no more than 500 employees including affiliates, a U.S. place of business, and majority (more than 50%) ownership and control by U.S. citizens or permanent resident aliens (subject to SBA's additional rules for other ownership structures).
The proposed technical work must fit one of the specific topics published in that cycle's DOT solicitation under FHWA, FRA, FTA or PHMSA — a strong general R&D idea that does not map to a published topic is not eligible in that cycle.
For Phase II, eligibility is restricted to businesses that completed a DOT Phase I award in a prior cycle; new applicants cannot enter directly at Phase II.
How to apply
- Subscribe for updates on the DOT SBIR page (via GovDelivery) to be notified when the next pre-solicitation notice and full solicitation open — this is the primary mechanism the page itself directs applicants to right now, since no cycle is currently open.
- Register for a Unique Entity ID (UEI) through SAM.gov ahead of time; a UEI is required before a company can receive any federal SBIR award, and registration can take several weeks, so it should not be left until a solicitation opens.
- When a solicitation opens, read the specific topic descriptions published for that cycle (across FHWA, FRA, FTA and PHMSA) and confirm the proposed technology responds directly to a published topic before preparing a proposal.
- Prepare and submit the Phase I proposal through DOT's designated submission channel for that cycle, before the stated closing date and time published in that cycle's solicitation.
- If awarded Phase I, complete that award's milestones; Phase II is then pursued as a DOT Phase I awardee rather than as a new applicant.
- For program questions, DOT SBIR program support can be reached at DOTSBIR@dot.gov.
Frequently asked
Is DOT SBIR currently open for applications?
No. The official Volpe Center SBIR page currently offers only a subscribe-for-updates signup for the next solicitation, with no open topics listed; check that page directly before assuming a new cycle has opened.
How much can a DOT SBIR Phase I award be worth?
Per SBA's SBIR.gov programme directory, DOT's Phase I awards go up to $200,000. Amounts are set per solicitation cycle, so confirm the current figure once a new solicitation opens.
Can I apply directly for Phase II?
No. DOT only considers Phase II applications from businesses that already hold a DOT Phase I award from a prior cycle. There is no direct-entry path to Phase II.
What kind of technology does DOT SBIR fund?
Technology that supports the missions of specific DOT operating administrations named in that year's topics — per SBA's SBIR.gov programme directory, these span the Federal Highway Administration, Federal Railroad Administration, Federal Transit Administration and Pipeline and Hazardous Materials Safety Administration. A proposal has to map to a published topic, not just be transportation-adjacent.
Who actually runs the DOT SBIR program day to day?
The Volpe National Transportation Systems Center, a DOT research center in Cambridge, Massachusetts, administers the program on behalf of the Department of Transportation. Program-wide SBIR policy is set by the SBA, but the funding agreement and solicitation are DOT's.
Is DOT SBIR funding a grant I have to repay, or equity the government takes?
Neither. Like SBIR funding government-wide, it is non-dilutive: DOT does not take an equity stake in the awardee and the award is not a loan that gets repaid.
Does DOT SBIR fund Phase III commercialization?
No. DOT's SBIR program, like SBIR government-wide, does not fund Phase III directly. Phase III commercialization work is typically pursued through other funding, such as follow-on contracts, once Phase I/II R&D is complete.
Reviewed 2026-08-16. Programmes change — confirm current eligibility, amounts and deadlines on the official page before you apply. CapEasy is a private consultancy and is not affiliated with any government authority.