Neb. Rev. Stat. §§ 60-6,232
A rotating or flashing amber light or lights shall be displayed on the roof of any motor vehicle being operated by any rural mail carrier outside the corporate limits of any municipality in this state on or near any highway in the process of delivering mail.
A rotating or flashing amber light or lights may be displayed on (1) any vehicle of the Military Department while on any state emergency mission, (2) any motor vehicle being operated by any public utility, vehicle service, or towing service or any publicly or privately owned construction or maintenance vehicle while performing its duties on or near any highway, (3) any motor vehicle being operated by any member of the Civil Air Patrol, (4) any pilot vehicle escorting an overdimensional load, (5) any vehicle while actually engaged in the moving of houses, buildings, or other objects of extraordinary bulk, including unbaled livestock forage as authorized by subdivision (2)(f) of section 60-6,288, (6) any motor vehicle owned by or operated on behalf of a railroad carrier that is stopped to load or unload passengers, or (7) any motor vehicle operated by or for an emergency management worker as defined in section 81-829.39 or a storm spotter as defined in section 81-829.67 who is activated by a local emergency management organization.
Neb. Rev. Stat. §§ 60-6,232