This is ultimately a question that you alone must answer. You have the constitutional right to represent yourself in any criminal proceeding in the Pittsburg Municipal Court. In most circumstances, it would not be necessary to retain an attorney for cases such as simple traffic matters.
The City will be represented by an experienced prosecutor who is a trained attorney. You will be expected to know and follow the rules of procedure and evidence, as well as the proper method of asking questions. Also, remember that the Judge is not allowed to help you.