I don't give legal advice, but this is what I do. First of all never argue with a cop. A few jobs attract psychopaths, and cops and politicians are among those jobs. The cop has a gun, a badge and an ego. If you want to cause him problems, only do it in court. 'Sorry officer, I don't have those things with me right now.' Be polite and get your ticket if need be. Then fight it all in court if you want. Most cops won't shoot you in court. Unless you caused an injury, you didn't do anything wrong.