Neb. Rev. Stat. §§ 60-6,365
Current with changes through the 2024 First Special Legislative Session
No one shall operate a diesel-powered motor vehicle on any highway in this state in such a manner that smoke discharged from the exhaust is of a shade or density equal to or darker than that designated as Number 1 of the Ringelmann Chart or equivalent opacity of twenty percent for ten consecutive seconds or longer.
Neb. Rev. Stat. §§ 60-6,365