2024 23 USC 502 – Surface transportation research, development, and technology

2023 23 USC 502 – Surface transportation research, development, and technology

2022 23 USC 502 – Surface transportation research, development, and technology

2021 23 USC 502 – Surface transportation research, development, and technology

2020 23 USC 502 – Surface transportation research, development, and technology

2018 23 USC 502 – Surface transportation research, development, and technology

2017 23 USC 502 – Surface transportation research, development, and technology

2015 23 USC 502 – Surface transportation research, development, and technology

2014 23 USC 502 – Surface transportation research, development, and technology

2013 23 USC 502 – Surface transportation research, development, and technology

2012 23 USC 502 – Surface transportation research, development, and technology

2010 23 USC 502 – Surface transportation research