Experienced DUI Defense Attorney Contact Us Today to Move Forward with Your Case

Sonoma County DUI Lawyer

Driving under the influence (DUI) is a serious criminal offense which has driver's license suspension consequences. Every Sonoma County DUI arrest initiates two separate cases. The first case is a Sonoma County criminal case, while the second case is a California DMV license suspension action.

If you, someone you know or a family member has been arrested by the California Highway Patrol, Sonoma County Sheriff's Department or local police for driving under the influence, consider consulting with an attorney who specializes in DUI defense to discuss the case.

Robert Tayac is recognized as being among the top driving under the influence defense attorneys in California. His law office is a highly specialized DUI law firm representing clients accused of driving under the influence of alcohol, medication or drugs in Sonoma County.

A person arrested for driving under the influence or driving with a blood alcohol level at or above the legal limit will be required to appear or have an attorney appear at the Sonoma County Superior Court located in Santa Rosa. In addition, a person arrested for driving with a blood alcohol levelof 0.08% or greater will have a separate California DMV license suspension action initiated by the California DMV stemming from a driving with a blood alcohol level at or above the legal limit. This second case will be before the Department of Motor Vehicles’ Driver Safety Office in San Francisco or a Sonoma County DMV satellite office. The DUI criminal case and the Department of Motor Vehicles case are separate from one another.

Robert Tayac specializes in Sonoma County DUI defense and is a present or former member of professional organizations whose focus is related to this practice area, including the National College for DUI Defense (NCDD), California DUI Lawyers Association (CDLA), National Association of Criminal Defense Lawyers (NACDL), California Attorneys for Criminal Justice (CACJ), and California Public Defenders Association (CPDA). Additionally, each attorney working with Robert Tayac's law firm is familiar with the specific procedures of the Sonoma County Superior Court. Robert Tayac's office accepts no other type of case other than a California DUI or DMV cases and does not represent clients in any court or tribunal outside of the State of California.

A DUI arrest in Sonoma County will ordinarily initiate two separate cases.

The first case is the DUI criminal case which will be prosecuted by the Sonoma County District Attorney’s office. The County District Attorney will usually charge a person arrested for a DUI with at least two separate criminal violations following the arrest made by a California Highway Patrol officer, deputy sheriff, or local police officer. The first DUI charge is for driving under the influence of alcohol, medication or drugs in violation of California Vehicle Code section 23152, subdivision (a). The second DUI charge is for driving with a blood alcohol level (BAC) of .08 percent or greater in violation of Vehicle Code Section 23152, subdivision (b). If the arrest involved an accident resulting in an injury to another person, a more serious felony DUI will be charged by the Sonoma County District Attorney in violation of California Vehicle Code section 23153, subdivision (a)(b).

The second DUI case is a DMV Administrative Per Se (APS) driver's license suspension case, in which the privilege to drive of the person arrested is at risk of being suspended. Drivers arrested for driving with a blood alcohol concentration of .08% or higher in California have only 10 days from the date of arrest to request an Administrative Per Se (APS) hearing.

If You Miss the 10-Day Deadline

If a hearing is not requested within ten (10) days of the DUI arrest, any California driver’s license will automatically be suspended thirty (30) days from the date of the arrest for a minimum of four (4) months. If the person arrested has an out of state driver license, the privilege of that person to drive within the State of California will be suspended indefinitely thirty (30) days from the date of the arrest and will not be restored until a California DUI school has been completed. Additionally, a driving suspension imposed by the Department of Motor Vehicles will usually trigger a license suspension action with the state agency which issued the out of state driver’s license.

California DMV hearings are complex, and should only be handled by a lawyer with experience handling DUI and DMV cases. In order to suspend a driver’s license, the California Department of Motor Vehicles need only prove by a preponderance of the evidence that the police had reasonable cause to believe a violation of California Vehicle Code Section 23152 or Section 23153 was committed, that the arrest was lawful, and that the driver had a blood alcohol concentration (BAC) of .08 percent or greater. Administrative Per Se hearings can be won, but usually only by an attorney with specialized knowledge of the DMV hearing process, the type of evidence presented and familiarity with the possible defenses.

The consequences are severe in a DUI case. A motorist accused of driving under the influence faces the possibility of jail, probation, large fines, driver’s license suspensions, mandatory alcohol education classes, ignition interlock devices, and other punishment. For that reason, it is imperative that you hire a qualified Sonoma County DUI lawyer handle your case the day you are released by the police.

If you or someone you know has been or may be accused of driving under the influence, or driving with a blood alcohol level at or above the legal limit in Sonoma County, please read the information contained in this website and call the office to discuss your case with me.

If you prefer, you may contact me online to tell me the details of your case, and I will respond promptly.

Phone: 707-576-9900
Fax: 415-552-6099
Toll Free: 800-901-1888

Sonoma Couundefinednty General Information

Sonoma County is on the northwest coast of California, one of the northernmost parts of the greater San Francisco Bay Area. Its largest city and county seat is Santa Rosa. Sonoma County is the home of Sonoma State University and Santa Rosa Junior College.

The county lies in the North Coast Ranges of northwestern California. Its ranges include the Mayacamas and the Sonoma Mountains, the southern peak of the latter being the prominent landform, Sears Point.

Sonoma County includes Santa Rosa, Petaluma, Rohnert Park, Windsor, Healdsburg, Sonoma, Cloverdale, Sebastopol and Cotati. The county seat of Sonoma County is Santa Rosa. Additionally, Sonoma County includes the unincorporated communities of Asti, Bodega, Bodega Bay, Boyes Hot Springs, El Verano, Geyserville, Glen Ellen, Jenner, Sea Ranch, and Soda Springs, to name a few.

Contact the Law Office of Robert Tayac for your free case evaluation!

Why Choose Our Firm?

Attorney Robert Tayac Puts a Long, Decorated Career to Work for You
  • Puts Over 20 Years of Experience Toward Your Case

  • Specialized Education in DUI Defense

  • Has Trained Other Attorneys in San Francisco

  • Former San Francisco Police Officer & Police Inspector

  • Certified by the SFPD on the Intoxilyzer 5000 Testing Device

  • Co-Authored the 4th Edition of California Drunk Driving Defense

  • Boasts a Successful Record Achieving the Best Result for His Clients

  • Takes the Time to Understand You & Your Case

Client Testimonials

  • “You made me feel confident and reassured that all aspects of my case were being handled in a professional and efficient manner.”


  • “...thank you for walking me through this process and making me feel at ease.”


  • “His in depth knowledge and expertise within his field, along with deep and lasting relationships with the District Attorneys office and everyone involved are without a doubt unmatched.”


  • “If you have a "must win," "zero sum" case and are willing to pay for his services, Robert Tayac may just be the very best DUI trial lawyer in Northern California.”


  • “He's professional, honors his promises, and gets excellent results for all his clients.”


Contact Us Today

Your Strong Defense Starts with a Case Evaluation
  • Please enter your name.
  • This isn't a valid phone number.
  • Please enter your email address.
    This isn't a valid email address.
  • Please make a selection.
  • Please enter a message.