What can I do if my rights were never read to me and I never had the opportunity to present proof that the warrant was not valid?

Police don't have to read you your rights, even if they arrest you. The only reason they read you your rights is if they want to interrogate you while in police custody and use your testimony against you in court. If they feel like there is no question about what happened and they don't see any reason they will need to interrogate you about the incident, they won't bother reading you your rights. They can always do it later if they question you while in police custody. Courts regularly issue warrants when a defendant fails to show up for court or fails to pay a fine for a traffic ticket. Did the judge recall your warrant and then say your case was dismissed? Or did the judge recall the warrant and give you a new court date so you could take care of the traffic ticket? Just because the judge recalled the warrant doesn't mean the judge thought the warrant was bad. Judges regularly recall warrants and give the defendant a new court date. I don't know why you were arrested again on September 5th unless you failed to show up for the new court date for the traffic ticket, or if you had a separate warrant for something else. You can hire an attorney to get your traffic violation reduced to a non-moving, no-point infraction that won't affect your driving record or insurance rates. You will have to pay a fine and court costs, but you most likely won't have to appear in court.