You should always do everything you can to attend court on your assigned court date, but if you end up missing court the judge may issue a bench warrant. A bench warrant is very similar to an arrest warrant, which means that you can be arrested. A judge may not issue a bench warrant but it is completely in their discretion to do so.
Although police may not actively pursue you because your charge is only traffic related or another minor offense, the police could do so if they wish. So in order to avoid your arrest, you should bring any and all documentation that might explain your absence and then contact a lawyer to see what your options are. You lawyer may be able to help explain why you missed the court date and get a new court date rescheduled.
You need an experienced attorney who will keep your interests in mind and be able to get the best outcome for you. If you have missed your court date, call The Law Offices of Wiley Nickel, PLLC for a free consultation at 919-585-1486.