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

Driving Under the Influence

California Vehicle Code Section 23152

23152. (a) It is unlawful for any person who is under the influence of any alcoholic beverage or drug, or under the combined influence of any alcoholic beverage and drug, to drive a vehicle.

(b) It is unlawful for any person who has 0.08 percent or more, by weight, of alcohol in his or her blood to drive a vehicle.
For purposes of this article and Section 34501.16, percent, by weight, of alcohol in a person's blood is based upon grams of alcohol per 100 milliliters of blood or grams of alcohol per 210 liters of breath.

In any prosecution under this subdivision, it is a rebuttable presumption that the person had 0.08 percent or more, by weight, of alcohol in his or her blood at the time of driving the vehicle if the person had 0.08 percent or more, by weight, of alcohol in his or her blood at the time of the performance of a chemical test within three hours after the driving.

(c) It is unlawful for any person who is addicted to the use of any drug to drive a vehicle. This subdivision shall not apply to a person who is participating in a narcotic treatment program approved pursuant to Article 3 (commencing with Section 11875) of Chapter 1 of Part 3 of Division 10.5 of the Health and Safety Code.

(d) It is unlawful for any person who has 0.04 percent or more, by weight, of alcohol in his or her blood to drive a commercial motor vehicle, as defined in Section 15210.

In any prosecution under this subdivision, it is a rebuttable presumption that the person had 0.04 percent or more, by weight, of alcohol in his or her blood at the time of driving the vehicle if the person had 0.04 percent or more, by weight, of alcohol in his or her blood at the time of the performance of a chemical test within three hours after the driving.

Office Location and Areas We Serve

The Law Office of Robert Tayac is located in San Francisco at 505 Montgomery Street, 11th Floor San Francisco, California 94111. Satellite offices are maintained in Napa, Redwood City, San Rafael, and Walnut Creek.

For more information on driving under the influence matters in neighboring cities and counties, feel free to review the county specific information on the resource pages listed below:

  • San Francisco
  • Marin County
  • San Mateo County
  • Oakland
  • Walnut Creek
  • San Rafael
  • Alameda County
  • Contra Costa County
  • Napa
  • Palo Alto

Contact The Office

Robert Tayac and the DUI investigators and experts working with him have been helping people who have been arrested for driving under the influence in San Francisco and the surrounding counties for more than twenty years. If you hire the Law Office of Robert Tayac to handle your DUI case, you will know that you have retained the services of the most knowledgeable, experienced, and trustworthy San Francisco DUI defense team.

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

  • “I can’t imagine things going any less painlessly than you made it for me.”

    J.M.S.

  • “Very professional and has a great human element that many lawyers don't have.”

    Former Client

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

    S.F.

  • “I sincerely appreciate both the work you did and your professionalism.”

    B.R.

  • “I just wanted to thank you for your wonderful work on getting my conviction expunged from my record.”

    N.D., DUI Attorney

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.