; (2) a description of the pedestrian injury or terrorism risks with respect to the proposed installation area; and (3) an analysis of how the proposed bollard installation project will mitigate those risks. (d) Use of funds A recipient of a grant under this section may only use the grant funds for a bollard installation project. (e) Federal share The Federal share of the costs of a bollard installation project carried out with a grant under this section may be up to 100 percent. (f) Authorization of appropriations There is authorized to be appropriated to the Secretary to carry out this section $5,000,000 for each of fiscal years 2021 through 2025. 1503. Transfer and sale of toll credits (a) Definitions In this section: (1) Originating state The term originating State means a State that— (A) is eligible to use a credit under section 120(i) of title 23, United States Code; and (B) has been selected by the Secretary under subsection (d)(2). (2) Pilot program The term pilot program means the pilot program established under subsection (b). (3) Recipient state The term recipient State means a State that receives a credit by transfer or by sale under this section from an originating State. (4) State The term State has the meaning given the term in section 101(a) of title 23, United States Code. (b) Establishment of pilot program The Secretary shall establish and implement a toll credit exchange pilot program in accordance with this section. (c) Purposes The purposes of the pilot program are— (1) to identify the extent of the demand to purchase toll credits; (2) to identify the cash price of toll credits through bilateral transactions between States; (3) to analyze the impact of the purchase or sale of toll credits on transportation expenditures; (4) to test the feasibility of expanding the pilot program to allow all States to participate on a permanent basis