How to Stay Calm During a DUI Stop: Practical Tips for Drivers in California The Role of Field Sobriety Tests in DUI Cases Field sobriety tests (FSTs) are often utilized by police officers during a DUI stop to assess a driver's level of impairment. These tests include tasks such as walking a straight line or holding one leg up while counting. While these tests are designed to evaluate coordination and balance, they are subjective and can be influenced by various factors, including anxiety or medical conditions. Options such as Los Angeles drunk driving attorney help keep everything running smoothly here. Understanding DUI Arrests and BAC Limits In California, law enforcement uses BAC levels to determine if a driver is operating under the influence. The legal limit for most drivers is 0.08%. However, for commercial drivers, the limit is 0.04%, and for individuals under 21, it is 0.01% due to zero-tolerance laws. If you are pulled over and suspected of DUI, the officer may administer a breathalyzer test to check your BAC. If your BAC exceeds these limits, you may face immediate arrest and charges. Your attorney can argue that the FSTs were not administered correctly or that external factors affected your performance. This argument can be an essential part of your defense strategy as it may undermine the reliability of the arresting officer's conclusions. How Does BAC Testing Work and What Are Your Rights? When stopped for suspected DUI, a law enforcement officer may ask you to undergo a breath or blood test to determine your BAC. It is crucial to know your rights in this situation. California law allows individuals to refuse a preliminary alcohol screening (PAS) test, typically given at the roadside, but refusing chemical tests after an arrest can lead to harsher penalties. Options such as Los Angeles drunk driving attorney help keep everything running smoothly here. What Are the Differences Between Misdemeanor and Felony DUI Charges?