49 C.F.R. § 271.101
(a) Program required. Each railroad shall establish and fully implement an RRP meeting the requirements of this part. An RRP shall systematically evaluate railroad safety hazards on a railroad's system and manage the resulting risks to reduce the number and rates of railroad accidents/incidents, injuries, and fatalities. An RRP is an ongoing program that supports continuous safety improvement. A railroad shall design its RRP so that it promotes and supports a positive safety culture at the railroad. An RRP shall include the following:
(c) Host railroads and system safety programs.