If a police officer pulls you over because they suspect you of driving under the influence of marijuana, you should know your rights. Taking these measures can protect you: Remain silent: When the police pull you over, don’t say “I’m sorry,” or admit to smoking marijuana. Anything you say can incriminate you, and the prosecution can use it against you in court. Ask for a lawyer, and don’t speak without one present. Refuse to take the field sobriety test: Politely decline if they ask you to take a sobriety test. However, if they have you take a breath, blood, or urine test at the station, you must comply with their request. Under Arizona law, you consent to get tested whenever you operate a vehicle. If you refuse, you may face suspension of your driver’s license. The best thing to do is to call a criminal defense attorney to determine whether you should consent or not.