49 CFR §269.3

1. (a)Route limitations. The pilot program this part implements is available for not more than three Amtrak long-distance routes.
2. (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.