Can I refuse a breathalyzer in California?

In California, individuals over the age of 21 who are not on DUI probation may refuse a roadside breath test. However, once an individual is arrested on suspicion of driving under the influence (DUI), they are required to submit to either a breath or blood test due to California's implied consent law. This law stipulates that by operating a vehicle, drivers have implicitly consented to these tests when suspected of DUI. Refusing to take the required breath or blood test can result in a driver's license suspension for up to three years, depending on the number of previous refusals. Additionally, harsher penalties may apply if the individual is subsequently convicted of DUI. It is important to note that law enforcement may obtain a warrant for a blood test regardless of the individual's refusal. In contrast, field sobriety tests are voluntary and can be refused without the immediate consequence of arrest. Individuals are encouraged to remain calm and polite during interactions with law enforcement. If an arrest occurs, cooperation with the breath or blood test is advisable.