The "School Bus Safety Act of 2025" aims to significantly enhance the safety of school buses by directing the Secretary of Transportation to issue comprehensive new rules. Within one year of enactment, the Secretary must mandate that school buses with a gross vehicle weight rating over 10,000 pounds be equipped with a 3-point safety belt at every designated seating position. Furthermore, the bill requires new standards for fire protection , including fire suppression systems, improved firewalls to prevent flame passage to the passenger compartment, and more rigorous interior flammability and smoke emission characteristics. Beyond passive safety, the legislation mandates active safety systems such as automatic emergency braking systems , event data recorders , and electronic stability control systems for all school buses. It also increases the required behind-the-wheel instruction for school bus operators to at least 8 hours on public roads with a trained instructor. Separately, the bill directs the Federal Motor Carrier Safety Administration and Federal Railroad Administration to finalize rulemaking on obstructive sleep apnea for safety-sensitive personnel. The Act also requires studies on the benefits of motion-activated detection systems for pedestrians and bicyclists, and systems to alert operators if passengers are not wearing 3-point safety belts, potentially leading to future mandates. To facilitate compliance, the bill establishes a grant program to assist local educational agencies in purchasing new school buses or modifying existing ones to include these new safety features.