2024 49 CFR 393.89 – Buses, driveshaft protection

2023 49 CFR 393.89 – Buses, driveshaft protection

2022 49 CFR 393.89 – Buses, driveshaft protection

2021 49 CFR 393.89 – Buses, driveshaft protection

2020 49 CFR 393.89 – Buses, driveshaft protection

2019 49 CFR 393.89 – Buses, driveshaft protection

2016 49 CFR 393.89 – Buses, driveshaft protection

2015 49 CFR 393.89 – Buses, driveshaft protection

2014 49 CFR 393.89 – Buses, driveshaft protection

2010 49 CFR 393.89 – Buses, driveshaft protection

2009 49 CFR 393.89 – Buses, driveshaft protection