authorized to use a special conveyance and I use a POV instead? You will be reimbursed the mileage cost for the use of your POV, and additional expenses such as parking fees, bridge, road and tunnel fees, not to exceed the constructive cost of the special conveyance. 301-10.403  What is the difference between a Government aircraft and an aircraft hired as a special conveyance? A Government aircraft is any aircraft owned, leased, chartered, or rented and operated by the Government. An aircraft hired as a special conveyance is an aircraft that you, in your private capacity, rent, lease, or charter and operate. Taxicabs, Shuttle Services, or Other Courtesy Transportation 301-10.420  When may I use a taxi, shuttle service or other courtesy transportation? (a) When authorized and approved by your agency, your transportation expenses in the performance of official travel are reimbursable for the usual fare plus tip for use of a taxi, shuttle service or other courtesy transportation (if charges result), in the following manner: (1) At your official station. (i) From your residence or other authorized point of departure, e.g., residence to airport; (ii) To your residence or other authorized point of return, e.g., airport to residence; (iii) From your residence to your office on the day you depart the official station on official TDY that requires at least one night?s lodging; or (iv) From your office to your residence on the day you return to the official station from an official TDY assignment that required at least one