The purpose of this legislation, known as the Bus Rolling Stock Modernization Act of 2025, is to set rules regarding advanced payments for purchasing bus rolling stock, which refers to the vehicles used in public transportation systems. The main objective is to streamline the process for transit agencies to acquire new buses while ensuring certain safeguards are in place. The key provisions of the Act allow transit agencies to make advance payments for bus purchases without needing prior approval or requiring a performance bond from the manufacturer.