Bus Rolling Stock Modernization Act of 2025

This bill modifies federal transit funding rules to allow transit agencies to make advance payments for new buses without requiring pre-approval or performance bonds from manufacturers. It directly affects public transit agencies purchasing bus rolling stock by permitting advance payments up to 20% of the total contract value. Key provisions require agencies to have a signed contract with the manufacturer, preaward authority, and compliance with existing requirements under sections 5318(e) and 5323(m) of Title 49. The change streamlines procurement but maintains strict limits on advance payment amounts and conditions.