San Francisco DUI Defense Attorneys, California Drunk Driving Defense Lawyers
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San Francisco DUI Defense Attorneys, California DMV Defense Lawyers.

DUI Consultation

The Law Office of Robert Tayac, serving the greater San Francisco and Alameda, Contra Costa, Marin, Napa, San Francisco, San Mateo, Santa Clara, and Sonoma counties exclusively.

San Francisco, California DUI Defense Attorney Robert Tayac

Northern California Criminal Defense Attorney Robert TayacSan Francisco, California DUI defense attorney Robert Tayac holds more than a decade of experience defending driving under the influence cases in Northern California. Born and raised in San Francisco, Robert Tayac graduated with a B.S. degree from the University of California, Davis. He later received his J.D. degree from the University of California, Berkeley, Boalt Hall School of Law, where he was an editor for the Law Review.

Mr. Tayac was a member of the San Francisco Police Department for more than 14 years and achieved the rank of Inspector of Police. California criminal defense lawyer Robert Tayac has defended countless driving under the influence cases and belongs to numerous professional associations, including The Bar Association of San Francisco, The National College for DUI Defense, National Association of Criminal Defense Lawyers (NACDL), California Attorneys for Criminal Justice (CACJ), and California Public Defenders Association.

San Francisco, California DUI Defense Attorney Nors Davidson

San Francisco, California DUI Defense Attorney Nors DavidsonSan Francisco, California criminal defense attorney Nors Davidson is senior managing associate of the Law Office of Robert Tayac. A native of Ketchum, Idaho, Mr. Davidson graduated from the University of Idaho with his bachelors’ degree in history. Mr. Davidson moved to San Francisco in 1997 to attend law school at the University of San Francisco. During law school, Mr. Davidson clerked for the homicide division of the San Francisco District Attorney’s Office and defended the indigent as a certified law student with the University of San Francisco Criminal Law Clinic.

Read more about California DUI defense attorney Nors Davidson.

San Francisco, California accident investigation and reconstruction expert Alan McCann

San Francisco, California accident investigation and reconstruction expert Alan McCannAlan McCann is a 33-year member of the San Francisco Police Department. Trained in accident investigation and reconstruction, Mr. McCann has conducted over a 1,000 driving under the influence of alcohol or drugs investigations and made over 600 DUI arrests. Mr. McCann holds basic, intermediate, and advanced POST (Peace Officer’s Standards and Training) Certificates. He was also awarded the San Francisco Police Department’s highest honor, the Gold Medal of Valor.

Consultant in Forensic Toxicology Halle Weingarten

Consultant in Forensic Toxicology Halle WeingartenComprehensive case review including evaluation of the role of alcohol and drugs in case specific context, effects and metabolism of these substances, assessment of the reliability of alcohol and drug test procedures, regulatory compliance, evidence handling procedures, and quality assurance. Expert testimony in criminal, administrative, and civil proceedings. Assist laboratories in setting up analytical methods that meet regulatory and legal requirements and in training laboratory staff and law enforcement officers.

Certified Forensic Toxicologist, Diplomate, American Board of Forensic Toxicology Forensic Alcohol Supervisor, California Department of Health Services Clinical Toxicologist Technologist, California Department of Health Services Intoxilyzer 5000, Operation and Maintenance, CMI, Inc., Breath Alcohol Technician Instructor (certified to train trainers and technicians), CMI, Inc. Breath Alcohol Technician, CMI, Inc. (Intoxilyzer 200, 400, 5000) Breath Alcohol Technician Trainer, MedExpress Toxicology, Inc. Breath Alcohol Technician Trainer, Intoximeters, Inc.

Certified Professional Collector Trainer, Drug and Alcohol Testing Industry Association.
Certificate of Completion of Standardized Field Sobriety Test (SFST) Training, 2007.

Investigator Paul Cavallero

Investigator Paul CavalleroInvestigator Paul Cavallero has conducted over 200 DUI investigations and regularly testifies in court as a witness on behalf of our clients. As a member of our firm for over 3 ½ years, he is responsible for gathering client discovery, delivering client motions to all Bay Area county courthouses, and photographing arrest locations.


The Law Office of Robert Tayac

600 Montgomery Street, Suite 210
San Francisco, California 94111

Alameda County: 510-352-9500
Contra Costa County: 925-288-9800
Marin County: 415-552-6000
Napa County: 707-576-9900
San Mateo County 650-570-3000
Santa Clara County: 408-985-8700
Sonoma County: 707-576-9900
San Francisco: 415-552-6000; Fax: 415-552-6099
Toll Free 800-901-1888

San Francisco General Information:

San Francisco-Oakland Bay BridgeThe City and County of San Francisco is the 4th most populous city in California and the 14th most populous city in the United States, with a 2006 estimated population of 744,041. One of the most densely populated major cities in the U.S; San Francisco is part of the much larger San Francisco Bay Area, which is home to approximately 7.2 million people.

The city is located on the tip of the San Francisco Peninsula, with the Pacific Ocean to the west, San Francisco Bay to the east, and the Golden Gate to the north.

San Francisco Skyline-TransAmerica TowerSan Francisco is a popular international tourist destination renowned for its steep rolling hills, an eclectic mix of Victorian and modern architecture, and famous landmarks, including the Golden Gate Bridge, Alcatraz Island, the cable cars, Coit Tower, and Chinatown. The city is also known for its diverse, cosmopolitan population, including a large and long-established LGBT community. While the climate includes chilly summer fog, the winters are mild.

San Francisco's shoreline has grown beyond its natural limits. Entire neighborhoods such as the Marina and Hunters Point, as well as large sections of the Embarcadero sit on areas of landfill. Treasure Island was constructed from material dredged from the bay as well as material resulting from tunneling through Yerba Buena Island during the construction of the Bay Bridge. Such land tends to be unstable during earthquakes; the resultant liquefaction causes extensive damage to property built upon it, as was evidenced in the Marina district during the 1989 Loma Prieta Earthquake.

©The Law Office of Robert Tayac - 600 Montgomery Street, Suite 210, San Francisco, California 94111
Phone: 415-552-6000; Fax: 415-552-6099; Email:
California DUI Lawyers and Drunk Driving Defense Attorneys practicing DUI Criminal Defense exclusively.