You can choose to not pay a court fine, but that will usually result in a lot of negative consequences ranging from possible collection action, license suspension, or even bench warrants for your arrest. If you do not want to accept any of these possible consequences, then you should consider another course of action.
The question of whether to fight a traffic ticket or to just pay it is one that only you can answer. If you are seriously considering your options, it would be worthwhile to consult with a local attorney in El Mirage who is experienced in these matters. You do have legal rights, but you should not rely on what you may have been "told" about the law by anyone other than a licensed attorney who knows the law and who can give you proper advice about your particular situation.
I agree with the previous answer. Bottom line: pay the fine; neither contesting it nor facing the consequences of not paying it are worthwhile.
NOTE: This information is offered for general purposes only and does not constitute legal advice about a specific legal problem. Neither the person asking the question nor any other readers should rely on the information as legal advice about their problem(s). This information is not attorney-client privileged and receipt of it does not create an attorney-client relationship.