2024 49 USC 20306 – Exemption for technological improvements

2023 49 USC 20306 – Exemption for technological improvements

2022 49 USC 20306 – Exemption for technological improvements

2021 49 USC 20306 – Exemption for technological improvements

2020 49 USC 20306 – Exemption for technological improvements

2018 49 USC 20306 – Exemption for technological improvements

2017 49 USC 20306 – Exemption for technological improvements

2015 49 USC 20306 – Exemption for technological improvements

2014 49 USC 20306 – Exemption for technological improvements