49 C.F.R. § 269.3 – Limitations.

(a) Route limitations. The pilot program this part implements is available for not more than three Amtrak long-distance routes.
(b) Time limitations. An eligible petitioner awarded a contract to provide passenger rail service under the pilot program this part implements shall only provide such service for a period not to exceed four years from the date of commencement of service. The Administrator has the discretion to renew such service for one additional operation period of four years.