The operation of such vehicles is not permitted on highways where, in the opinion of the Department of Transportation, their use would be inconsistent with the public safety because of a narrow roadway, excessive grades, extreme curvature or vehicular congestion.
The distance between axles must be measured to the nearest foot. If a fraction is exactly one-half foot, the next largest whole number must be used. The permits may be restricted in such manner as the Department of Transportation considers necessary and may, at the option of the Department, be cancelled without notice. No such permits may be issued for operation on any highway where that operation would prevent this State from receiving federal money for highway purposes.
NRS 484D.615