49 CFR §244.1

1. (a)This part prescribes requirements for filing and implementing a Safety Integration Plan with FRA whenever a Class I railroad proposes to consolidate with, merge with, or acquire control of another Class I railroad, or with a Class II railroad where there is a proposed amalgamation of operations.
2. (b)The purpose of this part is to achieve a reasonable level of railroad safety during the implementation of transactions described in paragraph (a) of this section. This part does not preclude a railroad from taking additional measures not inconsistent with this part to provide for safety in connection with a transaction.
3. (c)The requirements prescribed under this part apply only to FRA's disposition of a regulated transaction filed by an applicant. The transactions covered by this part also require separate filing with and approval by the Surface Transportation Board. See 49 CFR part 1106.