If a violator of the restrictions on stopping, standing, or parking under the traffic laws or ordinances does not appear in response to a traffic citation affixed to such motor vehicle within a period of five (5) days, the clerk of the municipal court may send to the owner of the motor vehicle to which the traffic citation was affixed a letter informing him of the violation and warning him that in the event such letter is disregarded for a period of five (5) days, a warrant of arrest may be issued. On any occasion where two (2) or more such traffic citations have been affixed on the same motor vehicle and the traffic citations have been' disregarded, a warrant of arrest may be issued without sending the letter provided in this section.