Looking at a compilation of the CSX signal rules, one sees "standard" rules (Seaboard or B&O), C&O rules, and ex-Conrail (NORAC) rules. The ETT for the RF&P sub explains its cab signal aspects. Yet, I don't see anything for the ex-ACL. I know they historically used three-color searchlights. Did they have a the same set of aspects as SAL, or were signals on ex-ACL lines standardized in the SCL, Seaboard System, or CSX eras?