; 65 Fed. Reg. 24613), to provide transit benefits to employees of the agency shall provide transit benefits to employees who use the services of any digital transportation company within the Washington Metropolitan Area in the same manner as such agency provides transit benefits to employees who use public transportation services within the Washington Metropolitan Area. (b) Requirements (1) Election Unless otherwise statutorily authorized, an employee may receive transit benefits under this section only if the employee agrees in writing to not accept any other transit or parking benefit offered by the head of any agency with a transit benefit program while receiving the transit benefits under this section. (2) Limitation The amount of the transit benefit provided to an employee under this section during any month for the use of services provided by any digital transportation company may not exceed the amount of the monthly average transit benefit received by the employee during the 6-month period immediately preceding the month during which an election is made under paragraph (1). (3) Implementation Transit benefits under this section shall be provided in a manner substantially similar to the manner in which transit benefits are provided to employees who use mass transportation services. The head of any agency with a transit benefit program may consult with any digital transportation company and any other head of any agency with a transit benefit program to establish the procedures necessary to provide transit benefits under this section. (4) Substantiation The head of any agency with a transit benefit program, the Secretary of the Department of Transportation, and the Secretary of the Treasury shall, in connection with the establishment of a process for implementing the transit benefit for any digital transportation company, work with any such digital transportation company in establishing a process to substantiate the use of transit benefits by Federal employees using the benefit for services provided by a