Nevada Revised Statutes
Chapter 320 - Districts for Maintenance of Roads
NRS 320.040 - "Maintenance" defined.

"Maintenance" means any activity necessary to preserve the useful life of a road, including, without limitation, painting, repairing, grading, oiling, patching, resurfacing, sanding, sweeping, washing and removing ice and snow.
(Added to NRS by 1999, 2084)