; or (B) used exclusively to transport passengers and employees between the airport and— (i) nearby facilities which are owned or controlled by the airport or which otherwise directly support the functions or services provided by the airport; or (ii) an intermodal surface transportation facility adjacent to the airport. (2) Removable power source The term removable power source means a power source that is separately installed in, and removable from, a zero-emission vehicle and may include a battery, a fuel cell, an ultra-capacitor, or other power source used in a zero-emission vehicle. (3) Zero-emission vehicle The term zero-emission vehicle means— (A) a zero-emission vehicle as defined in section 88.102–94 of title 40, Code of Federal Regulations; or (B) a vehicle that produces zero exhaust emissions of any criteria pollutant (or precursor pollutant) under any possible operational modes and conditions. . (b) Special apportionment categories Section 47117(e)(1)(A) of title 49, United States Code, is amended by inserting for airport development described in section 47102(3)(Q), after under section 47141, . (c) Deployment of zero emission vehicle technology (1) Establishment The Secretary of Transportation may establish a zero-emission airport technology program— (A) to facilitate the deployment of commercially viable zero-emission airport vehicles, technology, and related infrastructure