DUI Defense Is a Specialized Area of the Law

DUI is a very complicated field, and the more I practiced in it, the more experience I got in DUIs, the more I realized you really do need to specialize and focus on this particular area. It is very complex with lots of different legal issues, factual issues, and scientific issues.

I really enjoy the challenge, and I also enjoy helping my clients. You encounter a pretty wide spectrum of people who are stopped and accused of driving under the influence. It touches all and is a difficult time in their life. Over the last 15 years, I have probably handled over 2,000 DUI cases.

I started in law school, studying criminal law, criminal procedures, and DUI in particular. I did spend some time with the Public Defender’s office in San Diego when I was in law school there. I graduated from an accelerated program at California Western School of Law which is an approved law school down in San Diego.

I won various awards during my law school tenure in trial competitions with court. I also received awards for my pro bono services in the community.

In 1998, I graduated in December, took the first-available bar in February and passed the first time. Since then, I have been working on defending individual’s rights in the court system.

I have been qualified and sat as a pro tem judge in Los Angeles County. I started doing that in 2005 and since then, I have handled countless matters as a pro tem for both traffic-related matters and other matters such as small claims.

I have extensively studied over the years the field of driving under the influence and the effects of alcohol in the human body. I am trained as a field sobriety test administrator in accordance with the National Highway Traffic and Safety Administration. From the International Association of Chief of Police, I am qualified as a student practitioner on the field sobriety test.

Later, I obtained qualifications as an instructor in the standardized field sobriety test in the accordance with the National Highway Traffic and Safety Administration. I have instructed others on how to administer field sobriety tests and I have helped other officers and lawyers evaluate field sobriety tests in real life situations.

I have trained extensively on breath testing equipment that is used in Los Angeles County. I am certified as an operator on the Data Master Breath testing machine, which is currently in use throughout Los Angeles County. I have actually taught training courses for others on the Data Master machine. I have taken the machine apart and put it together and diagnosed problems with it. I have used it to test real subjects under laboratory conditions as well.

Additionally, I have trained extensively on graduate level course work on blood testing and urine testing equipment, in particular to gas chromatography. While studying in Chicago, I learned about the use of the gas chromatography, how to program it, calibrate it, and check it for accuracy. I learned how to run biological samples thought that machine as well as how to be able to diagnosis errors and be able to fix the machine and its daily operation.

I worked with the gas chromatograph at Axiom Analytical Laboratories. I took a week long course in gas chromatography as well. The course discussed both regular single column gas chromatographies, dual column gas chromatography as well explained spectrometry in how to analyze biological samples for the presence of alcohol and drugs.

I have studied extensively on the inspection of blood and alcohol which are the results the machine produces. I have analyzed those and can explain how that works to other lawyers as well as law enforcement officers.

My community has recognized me in the field as a leader, and I’ve earned numerous awards for being one of the Top Trial Attorneys in California.

When Administering a Chemical Test to Suspected Drunk Drivers, Police Will Obtain a Breath, Blood or Urine Sample from the Motorist

When we are dealing with chemical testing, there can be chemical testing for alcohol in human breath, which would be administered on breath testing instrument such as the Data Master or similar machine.

If the police take a blood or urine sample, they will test that on the gas chromatograph. It is a different form of chemical testing and for many purposes is more reliable and more accurate than breath testing.

Mark Rosenfeld - Criminal and DUI Defence Trial Lawyers

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