2024 49 CFR 213.343 – Continuous welded rail (CWR)

2023 49 CFR 213.343 – Continuous welded rail (CWR)

2022 49 CFR 213.343 – Continuous welded rail (CWR)

2021 49 CFR 213.343 – Continuous welded rail (CWR)

2020 49 CFR 213.343 – Continuous welded rail (CWR)

2019 49 CFR 213.343 – Continuous welded rail (CWR)

2016 49 CFR 213.343 – Continuous welded rail (CWR)

2015 49 CFR 213.343 – Continuous welded rail (CWR)

2014 49 CFR 213.343 – Continuous welded rail (CWR)

2010 49 CFR 213.343 – Continuous welded rail (CWR)

2009 49 CFR 213.343 – Continuous welded rail (CWR)