; and (2) shall be excluded from vehicle revenue miles data used in the calculation described in section 5336. (h) Savings clause Subsection (c)(2) and subsection (g) shall not apply to any eligible activities under this section if such activities are being carried out in compliance with the Americans with Disabilities Act of 1990 ( 42 U.S.C. 12101 et seq.). (i) Definitions In this section: (1) Deadhead vehicle miles The term deadhead vehicle miles means the miles that a vehicle travels when out of revenue service, including leaving or returning to the garage or yard facility, changing routes, when there is no expectation of carrying revenue passengers, and any miles traveled by a private operator without a passenger. (2) Mobility as a service The term mobility as a service means services that constitute the integration of mobility on demand services and public transportation that are available and accessible to all travelers, provide multimodal trip planning, and a unified payment system. (3) Mobility on demand The term mobility on demand means an on-demand transportation service shared among individuals, either concurrently or one after another. (4) Covered recipient The term covered recipient means a State or local government entity, private nonprofit organization, or Tribe that— (A) operates a public transportation service