Besides crossings other things are involved , like continous burning ditchlights to protect for roadway workers, basicly a locomotive that travels faster than 20 mph needs ditchlights, not only for crossings but for rest of railroad. the exeption for #20 is probably for this reason :
(h) Any locomotive subject to Part 229, that was built before
December 31, 1948, and that is not used regularly in commuter or
intercity passenger service, shall be considered historic equipment and
excepted from the requirements of paragraphs (d) through (h) of this
section.
It would still leave operator subject to hefty lawsuits incase of accident if they hit a railroad worker.
If Conductors are in charge, why are they promoted to be Engineer???
Retired Triebfahrzeugführer. I am not a moderator.