2024 49 CFR 661.12 – Certification requirement for procurement of buses, other rolling stock and associated equipment

2023 49 CFR 661.12 – Certification requirement for procurement of buses, other rolling stock and associated equipment

2022 49 CFR 661.12 – Certification requirement for procurement of buses, other rolling stock and associated equipment

2021 49 CFR 661.12 – Certification requirement for procurement of buses, other rolling stock and associated equipment

2020 49 CFR 661.12 – Certification requirement for procurement of buses, other rolling stock and associated equipment

2019 49 CFR 661.12 – Certification requirement for procurement of buses, other rolling stock and associated equipment

2016 49 CFR 661.12 – Certification requirement for procurement of buses, other rolling stock and associated equipment

2015 49 CFR 661.12 – Certification requirement for procurement of buses, other rolling stock and associated equipment

2014 49 CFR 661.12 – Certification requirement for procurement of buses, other rolling stock and associated equipment

2010 49 CFR 661.12 – Certification requirement for procurement of buses, other rolling stock and associated equipment

2009 49 CFR 661.12 – Certification requirement for procurement of buses, other rolling stock and associated equipment