1. Short title This Act may be cited as the Resilient Transit Act of 2023 . 2. Definitions Section 5302 of title 49, United States Code, is amended— (1) by redesignating paragraphs (17) through (25) as paragraphs (18) through (26), respectively; and (2) by inserting after paragraph (16) the following: (17) Resilience improvement The term resilience improvement has the meaning given the term in section 176(a) of title 23. . 3. State of good repair grants for public transportation resilience improvement (a) In general Section 5337 of title 49, United States Code, is amended by adding at the end the following: (g) Public transportation resilience improvement grants (1) In general The Secretary may make grants under this subsection to assist State and local government authorities in financing 1 or more eligible activities described in paragraph (2). (2) Eligible activities (A) In general A recipient of a grant under this subsection may use grant amounts for public transportation resilience improvements that increase the resilience of public transportation systems from the impacts of climate change, such as sea level rise, flooding, wildfires, extreme weather events, and other natural disasters. (B) Inclusions Activities eligible to be carried out using grant amounts under this subsection include— (i) the installation of mitigation measures that prevent the intrusion of floodwaters; (ii) the installation of equipment to detect the occurrence of a flood event; (iii) the replacement of equipment or facilities that are currently prone to flood events or will be in the future; (iv) the purchase of new equipment to support regular maintenance of drainage and pumping infrastructure; (v) the replacement of equipment stressed during extreme temperature events; (vi) the installation of equipment to regulate temperatures and sensors to monitor extreme temperatures; (vii) the development of backup systems to provide redundancy during the outage of a primary power source