I am not an attorney and not giving legal advice. I have a clean driving record, and encourage responsibility. But I also recognize that the police like to trick people into providing evidence that can be used against themselves in traffic court, by asking "Do you know how fast you were going?" If you answer that question with a specific number, you have probably just lost your case. Jeannie has successfully defended "a friend of mine" twice, and this friend did not give the police a specific speed. So you could respond with something like "I thought that I was going approximately with the flow of traffic." If the police persist with further leading questions, you could say "officer, I don't want to be argumentative, may just I sign my ticket and go?" Remember, the damage to your driving record could shoot the price of your insurance through the roof, so be truthful but not stupid, and good luck.