; and (B) other vehicle-to-infrastructure connectivity technologies; and (2) an evaluation of the safety, mobility, and environmental impacts resulting from a delay of the adoption of proven dedicated short-range communication technologies for vehicle-to-infrastructure communication. (c) Public comment Before entering into an agreement under subsection (a), the Secretary shall provide an opportunity for public comment on the study proposal. (d) Report If the Transportation Research Board enters into the agreement under subsection (a), to the maximum extent practicable, not later than 2 years after the date of enactment of this Act, the Secretary shall submit to Congress the study conducted under this section. 1514. Nonhighway recreational fuel study (a) Definitions In this section: (1) Highway Trust Fund The term Highway Trust Fund means the Highway Trust Fund established by section 9503(a) of the Internal Revenue Code of 1986. (2) Nonhighway recreational fuel taxes The term nonhighway recreational fuel taxes means taxes under section 4041 and 4081 of the Internal Revenue Code of 1986 with respect to fuel used in vehicles on recreational trails or back country terrain (including vehicles registered for highway use when used on recreational trails, trail access roads not eligible for funding under title 23, United States Code, or back country terrain). (3) Recreational trails program The term recreational trails program means the recreational trails program under section 206 of title 23, United States Code. (b) Assessment