Others have answered the questions about getting arrested. Here's a specific answer about Miranda rights.

Miranda rights are not read to you when you are pulled over on suspicion of breaking the law. They are read to you when you are being formally interrogated. Ask "Am I being detained?" or "Am I being interrogated?" If they say "no", keep quiet. If they say "yes", that's when they are required to read you your rights, at which point you say "I want to speak to my lawyer".