1. For vehicles that perform construction, maintenance or repair of highways, including, without limitation, vehicles used for the removal of snow, when the vehicle is engaged in such construction, maintenance or repair; and
2. For all other authorized vehicles of the Department of Transportation used in the construction, maintenance or repair of highways:
(a) In an area designated as a temporary traffic control zone in which construction, maintenance or repair of a highway is conducted; and
(b) At a time when the workers who are performing the construction, maintenance or repair of the highway are present.
(Added to NRS by 2003, 3236)—(Substituted in revision for NRS 484.584)