(a) Where Government employees are required upon the request of the chief executive officer of their agency to use their personally owned motor vehicle in the conduct of official government business which they are responsible for, they shall be reimbursed at the rate of sixty-five cents per mile. Such reimbursement shall be made from the Transportation Revolving Fund, upon the submission of certified vouchers indicating applicable odometer readings and such other information as required by the Commissioner or his designee, the Deputy Commissioner.
(b) No Government employees shall be entitled to any reimbursement unless an application therefor shall be submitted by the chief executive officer of the agency concerned, setting forth the justification for the use of the personally owned motor vehicle which shall be approved by the Commissioner or his designee, the Deputy Commissioner. Any approval for reimbursement shall expire on September thirtieth of the fiscal year and shall be reapplied for in the same manner as the original application in order to be in effect in the subsequent fiscal year.