D.C. Mun. Regs. tit. 6-B, § 4007
4007.1 If heavy rail or intercity bus service is approved by an agency as a mode of employee travel, an agency shall pay for, and an employee shall only be reimbursed for, the cost of the lowest-price coach class heavy rail (for example, Amtrak) or intercity bus service that reasonably meets the travel needs of the employee, unless another class of service is authorized under § 4007.3.
4007.2 To determine and obtain the lowest-price coach class fare that reasonably meets the travel needs of the employee, the employee shall:
(a) Compare prices online at the heavy rail or bus carrier website; and
(b) Arrange for the purchase of transportation as far as possible in advance in order to ensure that the lowest prices are available.
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4007.1
4007.2
4007.3 An agency may approve a class of service other than basic, coach-class service if:
(a) No basic, coach-class service is reasonably available and the travel cannot be rescheduled in a manner that is advantageous to the government;
(b) Use of other than basic, coach-class service is necessary to accommodate a medical disability
or other special need;
(c) Regularly scheduled heavy rail or bus service between the origin and destination points only provide classes of service that are not basic, coach-class service; or
(d) The use of other than basic, coach-class service results in an overall cost savings to the government, for example by avoiding additional travel expenses, overtime, or lost productive time while awaiting or using basic, coach-class service.
Mere preference or convenience is not an acceptable factor for an agency to consider.
4007.4 An employee may upgrade to other than basic, coach-class service, or to preferred seating or service in coach-class accommodations, at the employee's personal expense. The employee shall be responsible for the payment of the cost of any upgrades.
SOURCE: Final Rulemaking published at 67 DCR 7860 (June 26, 2020).