usage fees or other user-based alternative revenue mechanisms for surface transportation programs. (7) To evaluate the ease of compliance and enforcement of a variety of implementation approaches for different users of the transportation system. (e) Use of funds A State or group of States that receives a grant under this section shall use the grant to carry out activities to address the objectives described in subsection (d). (f) Consideration The Secretary shall consider geographic diversity in awarding grants under this section. (g) Limitations on revenue collected Any revenue collected through a user-based alternative revenue mechanism established using funds provided under this section shall not be considered a toll under section 301 of title 23, United States Code. (h) Federal share The Federal share of the cost of an activity carried out under this section may not exceed 70 percent of the total cost of the activity. (i) Funding Of the funds made available to carry out section 503(b) of title 23, United States Code, for each of fiscal years 2021 through 2025, $12,500,000 shall be used for State pilot projects under this section. (j) Repeal (1) In general Section 6020 of the FAST Act ( 23 U.S.C. 503 note