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Contra Costa County DUI Lawyer Robert Tayac

Specializing in DUI Defense in the Martinez, Pittsburg and Richmond Courthouses

Welcome to the website for Contra Costa County DUI lawyer and California Department of Motor Vehicles' attorney Robert Tayac. If you, a relative or someone you know and care about has been arrested for driving under the influence (DUI) or driving with a blood alcohol level at or above the legal limit of 0.08 percent in Contra Costa County, or any of the surrounding counties of Alameda, Marin, Napa, San Mateo, Santa Clara, Solano or Sonoma, or has received a letter from the California DMV Driver Safety Office threatening a driver's license suspension or driving privilege suspension, please read the material presented in this website in the "What to Do First", "DUI Penalties" and "DMV Hearings" section of this website, then seriously consider hiring an experienced and locally based lawyer who specializes in driving under the influence cases.

From the moment a person is stopped by a California Highway Patrol Officer, local Police Officer, Contra Costa County Sheriff's Deputy or other law enforcement officer, they are being subjected to a DUI investigation and incriminating evidence is being collected for presentation to the Contra Costa County District Attorney. A driver's physical appearance and performance on so-called field sobriety tests will be recorded on a police report, as well as the results of a Preliminary Alcohol Screening device, evidential breath test, or evidential blood test.

While serious, the consequences of a first offense DUI arrest in Contra Costa County are less severe than those of a second offense DUI arrest. Multiple driving under the influence cases such as a third arrest for driving under the influence or even a fourth arrest for drunk driving will lead to increasingly serious DUI penalties which may include mandatory jail time or even a state prison commitment.

Additionally, the consequences of a Contra Costa County DUI accident or a DUI accident causing injury or death are very severe and may lead to an actual jail or prison sentence. Although there are DUI defenses which may apply to particular cases, many inexperienced DUI lawyers overstate the extent to which these defenses may be available to a particular individual's DUI case.

California DUI Laws are complicated. Most Contra Costa County DUI arrests initiate two separate cases. The first DUI case is the Contra Costa County criminal case which will be prosecuted by the District Attorney's office at one of the Contra Costa County courthouses located in Martinez, Pittsburg, or Richmond. The second Contra Costa DUI case is the DUI license suspension action which will be prosecuted at the California Department of Motor Vehicles Driver Safety Office located in Oakland. You or your attorney must request a DMV Hearing within ten (10) days of any Contra Costa County DUI arrest or your driver's license will automatically be suspended thirty (30) days from the date of the arrest for a minimum of four (4) months.

Out of state drivers are presented with additional legal issues because the state which issued them a driver's license (home state) will most likely initiate an additional case against their driver's license which may carry additional consequences in addition to those which may result from the California Department of Motor Vehicles DUI privilege suspension case. Those arrested for drunk driving who hold professional licenses are at risk of having an additional case initiated by the board or commission which issued the license which may impact their ability to practice their profession. Individuals who hold positions of trust, such as police officers, fire fighters, airline pilots and commercial truck drivers will also be presented with specific issues requiring special attention.

If a person is not a citizen of the United States, they face the risk of deportation, denial of naturalization, exclusion from admission to the United States, exclusion from readmission to the United States following travel outside of this country, denial of an extension of an H1B work visa or an upgrade to Lawful Permanent Resident (also called, Resident Alien Permit Holder or Green Card Holder), or other upgrade of status with the United States.

Contra Costa County DUI Lawyer Robert Tayac is committed to helping people who have been arrested for driving under the influence or driving with a blood alcohol level of 0.08% or greater.

For the past twenty years, Mr.Tayac has provided the highest quality legal services in all aspects of Contra Costa County DUI cases. In any one DUI case, there are a number of important matters which need to be handled and addressed immediately. Mr. Tayac handles each aspect of a client's DUI case personally, with the utmost care, attention, and concern. Regardless of whether Mr. Tayac is providing representation in the DUI criminal case, or DMV hearing, his clients know he is doing everything he can to secure the best possible result. In addition, Mr. Tayac also provides legal services to those accused of being multiple DUI offenders, as well as to out-of-state drivers who have been charged with a DUI in California.

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


A DMV hearing must be requested on your behalf within ten (10) days of your DUI arrest, or your driver's license will automatically be suspended thirty (30) days from the date of your arrest.

What To Do First

Contact Contra Costa DUI Attorney Robert Tayac

Walnut Creek DUI lawyer Robert Tayac is recognized as being a top Contra Costa County DUI lawyer who leads an experienced team of highly qualified DUI investigators and DUI experts who serve clients accused of driving under the influence (DUI) violations in Contra Costa County and other Bay Area Courts. Mr. Tayac has specialized education, training, and experience in DUI defense, enabling him to handle any California DUI case.

When appropriate, Mr. Tayac consults with expert witnesses, and collects evidence that is likely to convince a judge and jury to side in his clients' favor. Furthermore, Mr. Tayac is prepared to argue and negotiate with the prosecution for a reduction or dismissal of the charges for those clients who do not wish to take their cases to trial. Mr. Tayac wants his clients to feel protected and secure during the legal process, and that's why he ensures each client receives an unparalleled level of attention, confidentiality, and devotion.

Additionally, Mr. Tayac was the coauthor of the Fourth Edition of California Drunk Driving Defense which is the practice guide other attorneys use as a reference when they have questions regarding how to handle DUI cases in California. The California Supreme Court cited California Drunk Driving Defense as an authority in the case of People v. McNeal in 2009.

For well over fifteen years, people have trusted Robert Tayac to handle their Contra Costa County DUI and California DMV cases. His office provides high quality, no nonsense, cost effective representation to clients. No attorney will achieve a better result for you in a San Francisco driving under the influence case.

Client Testimonials

  • “These clients have called me to thank me for referring them to the Law offices of Robert Tayac.”

    R.R., Attorney at Law

  • “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.”


  • “Without Mr Tayac's knowledge and drive to succeed, I most likely would not be able to write this review today.”