(4) that failure to respond to the citation as provided above within the time specified: (a) shall result in the issuance of a summons when a violation of an ordinance or any parking offense is charged, or when the defendant is under 18 years of age, and in all other cases shall result in the issuance of a warrant for the arrest of the defendant; and (b) shall result in the suspension of the defendant’s driver’s license when a violation of the Vehicle Code is charged;