This legislation expands federal support programs for disadvantaged businesses across three transportation agencies. The bill increases funding for the Federal Highway Administration's disadvantaged business enterprise supportive services program from $10 million to $25 million, creates a new $5 million annual program at the Federal Transit Administration to provide training and assistance to small businesses owned by socially and economically disadvantaged individuals, and establishes a similar $5 million annual program at the Federal Aviation Administration. These programs aim to help disadvantaged-owned businesses develop the skills and capacity needed to compete fairly for federal contracts and subcontracts in transportation infrastructure projects. The bill allocates specific funding levels for fiscal years 2024 through 2026 across all three transportation agencies.