There can be several red flags that make it obvious for the authorities to stop you for a DUI. You can be swerving in and out of lanes, leaving your turn signals on for a long period of time, driving extremely slow due to paranoia, etc. Once you are stopped by law enforcement, they may request to guide you through a few tests to be able to determine whether or not you are intoxicated. Those tests are called “Field Sobriety Tests.” Along with those, law enforcement may want to perform a “Breathalyzer,” test which is a device used to measure your Blood Alcohol Level (BAC). The legal BAC limit in California is 0.08% which means anything above that is already considered to be a DUI. You may refuse all of the above tests which will give law enforcement the right to arrest you immediately, and add an additional charge against you which is called a “Refusal.” Once this occurs, they may implement blood drawing from you so as to determine the level of your BAC, which will be used against you in the Court of Law. When it comes to DUI, depending on how you were stopped or how your arrest was conducted, will determine if you are being arrested for a misdemeanor DUI or a felony DUI. While most people may think of a DUI as just that a DUI, it is not the case. A felony DUI has more serious consequences compared to a misdemeanor DUI.