[Code of Federal Regulations] [Title 41, Volume 4] [Revised as of July 1, 2004] From the U.S. Government Printing Office via GPO Access [CITE: 41CFR301-13.2] [Page 56] TITLE 41--PUBLIC CONTRACTS AND PROPERTY MANAGEMENT CHAPTER 301--TEMPORARY DUTY (TDY) TRAVEL ALLOWANCES PART 301-13_TRAVEL OF AN EMPLOYEE WITH SPECIAL NEEDS--Table of Contents Sec. 301-13.2 Under what conditions will my agency pay for my additional travel expense(s) under this part? When an additional travel expense is necessary to accommodate a special physical need which is either: (a) Clearly visible and discernible; or (b) Substantiated in writing by a competent medical authority.