Section 459.728 - Provisions supersede and preempt local regulation of transportation; exceptions1. Except as otherwise provided in subsection 2, the provisions of NRS 459.7052 to 459.728, inclusive, and the regulations adopted pursuant thereto supersede and preempt any ordinance or regulation adopted by the governing body of a political subdivision of this State governing the transportation of a hazardous material upon a public highway of this State.2. The provisions of subsection 1 do not apply to any ordinance or regulation: (a) For the control of traffic generally; or(b) Which is approved by the Board of Directors of the Department of Transportation pursuant to paragraph (b) of subsection 3 of NRS 484A.420.Added to NRS by 1999, 3348Added to NRS by 1999, 3348