§591.305. Allowance rates. — Inbound Citations

(e) The transportation allowance prescribed by paragraph (b)(1)(i) of § 591.305, or other allowance as may be prescribed for commuting by private motor vehicle, may not be paid unless the officially approved work schedule of the employee precludes use of the transportation services that may be available at lower cost.

(d) Except as provided under § 591.305(b)(4)(ii), when the necessity for remaining at the post of duty for the workweek is the basis for the allowance under § 591.304(a)(2), the allowance rate is paid for each full day, or prorated for each part of a day, that the employee remains at the duty post.