No railroad employee shall be held liable for any railroad engine or cars occupying or blocking any street, road, or highway grade crossing where such occupying or blocking is necessitated or required in order to comply with a rule, regulation or order issued by any state or federal regulatory body.

Source: SL 1977, ch 388; SDCL Supp, § 49-24-18; SL 1980, ch 322, § 93.