The Resilient Transit Act of 2025 aims to bolster the resilience of public transportation systems across the United States. It achieves this by amending title 49, United States Code, to explicitly authorize the use of existing state of good repair grants for a wide range of resilience improvement activities. This includes protecting infrastructure from the impacts of climate change, such as sea level rise, flooding, wildfires, and extreme weather events. The bill introduces a new grant program under Section 5337(g), enabling State and local government authorities to finance eligible activities. These activities encompass installing flood mitigation measures, replacing vulnerable equipment, developing backup power systems, and conducting vulnerability assessments. A significant focus is placed on ensuring these improvements benefit environmental justice communities and underserved communities , which are precisely defined within the legislation. To ensure accountability and targeted investment, the Act mandates annual reports to Congress. These reports must detail the activities carried out, summarize projects benefiting specific disadvantaged communities, and offer recommendations for improving the program's administration. Furthermore, the bill authorizes an additional $300,000,000 for fiscal year 2026 specifically for these new public transportation resilience improvement grants, reflecting a substantial commitment to climate adaptation for transit infrastructure.