§ 20-44  MUFFLERS AND CUT-OUTS.
   (A)   No motor vehicles with an internal combustion engine shall be operated within the city unless the exhaust from the engine is muffled by a suitable and sufficient muffler.
   (B)   No muffler cut-out or exhaust or vacuum whistle shall be used on any motor vehicle while operating within the city, except that exhaust whistles may be used on authorized emergency vehicles.
(`90 Code, § 20-17)