§47-11-1005.

§47-11-1005.
   
   Provisions of this article shall not apply to authorized emergency
   vehicles or to vehicles or machinery used in the construction or
   maintenance of highways, and such vehicles or machinery may be
   operated on any part of the road, whether same is open to traffic or
   closed, when such operation is necessary in the maintenance or
   construction of said highway; provided, that the Department of
   Highways shall protect all such operations with adequate warnings,
   signs, signals, lights, devices, or flagmen.