Ditch lights on L&I 9373

Looking through pictures of L&I 9373 on the NY&A, it doesn't seem like there were ditch lights installed (auxiliary lights). I thought those were required after 1995. Was this not this case, or was that unit somehow excepted?

Thanks,
Dave

That was really for mainline operations heading over grade crossings. If it was a "yard goat" spending life in terminals or secondary trackage they wouldn't really be required.

Thanks! Makes sense