§47-1148.

§47-1148.
   
   The local authorities of cities and towns of this state shall have no
   power to pass, enforce, or maintain any ordinances, rules, or
   regulations requiring from any owner to whom this act is applicable
   any tax, fee, license, or permit for the free use of the public
   highways or excluding or prohibiting any vehicle registered in
   compliance with this act or the accessories used thereon from the free
   use of the public highways, and no ordinance, rule, or regulation in
   any way contrary to or inconsistent with the provisions of this act,
   now in force or hereafter enacted, shall have any force or effect. The
   powers given to local authorities in municipalities to enact general
   rules and ordinances applicable equally to all vehicles upon certain
   streets in such cities where the traffic is heavy and continuous and
   the powers given local authorities to regulate vehicles offered to the
   public for hire or for processions, assemblages, or parades in the
   streets or public places shall remain in full force and effect. Local
   authorities may set aside a specified public highway or highways for
   speed contests or races to be given under proper restrictions for the
   safety of the public and may exclude by ordinance orregulation
   vehicles used exclusively for commercial purposes from the parks and
   parkways of this state, provided such ordinance or regulation is
   applicable equally and generally to all other vehicles used for the
   same purpose. The local authorities may exclude vehicles from any
   cemetery or ground used for burial of the dead. Cities and towns may
   regulate the speed of vehicles within their corporate limits; and that
   as to streets and highways within the corporate limits which have been
   constructed or reconstructed with state or federal funds, local
   authorities shall have joint authority with the Transportation
   Commission to establish or alter speed limits. No local authority
   shall impose speed limits on any such street or highway substantially
   lower than those justified by the highway design, capacity, and
   traffic volume as determined by engineering studies. A municipality
   may issue licenses authorizing the parking or unloading of vehicles in
   zones on streets restricted for loading, unloading or commercial use.