There are many misconceptions about what a person should and shouldn’t do during a DUI stop, not the least of which is whether a person should submit to the breathalyzer test. Unfortunately, the answer, like many things in law, is much more complicated than simply “yes” or “no.”
There are actually two breathalyzer tests that can be taken during a California DUI stop. The first is the roadside breathalyzer, often called a preliminary screening alcohol test or “PAS” test, and the second is the “chemical breath test.”
Under California Vehicle Code section 23612(h), the PAS test “indicates the presence or concentration of alcohol based on a breath sample in order to establish reasonable cause to believe the person was driving [under the influence]…[it] is a field sobriety test and may be used by an officer as a further investigative tool.”
Like the other field sobriety tests that officers hope will give them reason to believe that the driver is intoxicated, the roadside breath test is optional. Having said that, many people don’t even know that the other field sobriety tests are optional. These tests include the horizontal gaze nystagmus test, the walk and turn test, and the one-leg stand test. All field sobriety tests, including the roadside breathalyzer, are optional. Although the officer might threaten to arrest you, stand your ground and politely refuse all field sobriety tests. They are only meant to give the officer the evidence they need to arrest you.
In fact, the officer must advise the driver that the roadside breath test is optional. California Vehicle Code section 23612(i) states that “If the officer decides to use a [PAS], the officer shall advise the person that he or she is requesting that person to take a [PAS] test to assist the officer in determining if that person is under the influence. The person’s obligation to submit to a [chemical test under California’s Implied Consent Law] is not satisfied by the person submitting to a [PAS] test. The officer shall advise the person of that fact and of the person’s right to refuse to take the [PAS] test.”
Whether the driver has submitted to the roadside breathalyzer or not, the officer must determine if the person is intoxicated and thus should be arrested.
If the officer has the required probable cause to make an arrest for a DUI, whether through the field sobriety tests, the PAS test, or any other information, California’s Implied Consent Law kicks in. Herein lies the difference between a roadside breath test and a chemical test.
Under California’s Implied Consent law, which is codified in California Vehicle Code section 23612(a)(1)(A), “A person who drives a motor vehicle is deemed to have given his or her consent to chemical testing of his or her blood or breath for the purpose of determining the alcohol content of his or her blood, if lawfully arrested for an offense allegedly committed in violation of [California’s DUI laws].”
Simply put, if you have a license and you drive in California, you have impliedly consented to submit to the chemical test after you have lawfully been arrested for a DUI, which can either be a breath test or a blood test. If the driver is like me and hates giving blood, then they must provide a breath test. Conversely, if a person opts against the breath test, they must submit to the blood test.
So, to answer the question that is the title of this article, you do not have to (nor do I recommend) submitting to the pre-arrest roadside breath test. However, after someone is arrested, they must do either a breath test or a blood test.