While you may not always be able to avoid these checkpoints it is important to remember your constitutional rights. First, you have the right to remain silent. Do not provide any more information than you have to, you are not required to tell the police officer what you were doing, when or where you were doing it. Any added information can be detrimental to your incognito pass through this checkpoint. Second, you have the right to refuse field sobriety tests. If a police officer suspects you to be driving while under the influence of impairing substances than they may ask you to perform field sobriety tests. You can respectfully say "I do not consent to field sobriety tests"; you cannot be penalized for this.