I have posted this before, but it is good to review now and then. This is the link to 49 CFR Part 209, Appendix A, Statement of Agency Policy Concerning Enforcement of the Federal Railroad Safety Laws. Here
Scroll down to the section titled “The Extent and Exercise of FRA’s Safety Jurisdiction.” This will clarify FRA jurisdiction regarding all railroads, including tourist and excursion operations.
C&TS is considered a "non insular" operation and, by policy, would not fall under the requirements of FRA Engineer/Conductor Certification and Federal D&A Testing.
Hope this helps!
Mike Ramsey