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  1. Mark Deniz has been a member of the California State bar for over 11 years.

    Mark is involved with the San Diego Bar Association serving on its legal panel.

    Due to his legal experience Mark Deniz has the privilege of serving on several attorney panels.

    Mark Deniz is a top contributor on Avvo providing outstanding legal advice. Mark Deniz also serves on the Avvo Legal Panel. The only San Diego Criminal Defense attorney who is on the panel.

  2. Mark Deniz is a member of California DUI Lawyers Association.

    Nation's Premier | NACDA | Top Ten Ranking 2014

    Mark Deniz has been named one of The National Academy of Criminal Defense Attorneys “Top 10” Attorneys.

    Mark Deniz has been deemed by The Lead Counsel Rating for providing exceptional legal representation to individuals and businesses.

    The firm is a member of the better business bureau who ensures quality service for its clients.

  3. The National Trial Lawyers - Top 100 Trial Lawyers

    Mark Deniz has consistently been named one of the National Trial Lawyers Top 100 Trial Lawyers.

    Mark Deniz is a member of the prestigious National College for DUI defense and has completed its intensive summer session curriculum conducted at Harvard Law School.

    Mark Deniz has received AVVO’s prestigious Clients’ Choice award

    The prestigious legal rating service AVVO has consistently given Law Offices of Mark Deniz a "Superb" rating.

  4. Proudly Serving the Community Service 2003

    Mark Deniz has proudly served as a member of the California state bar since 2003.

    Mark Deniz has consistently been named one of the National Trial Lawyers Top 100 Trial Lawyers.

  1. Mark Deniz has been a member of the California State bar for over 11 years.

  2. Mark is involved with the San Diego Bar Association serving on its legal panel.

  3. Due to his legal experience Mark Deniz has the privilege of serving on several attorney panels.

  4. Mark Deniz is a top contributor on Avvo providing outstanding legal advice. Mark Deniz also serves on the Avvo Legal Panel. The only San Diego Criminal Defense attorney who is on the panel.

  5. Mark Deniz is a member of California DUI Lawyers Association.

  6. Nation's Premier | NACDA | Top Ten Ranking 2014

    Mark Deniz has been named one of The National Academy of Criminal Defense Attorneys “Top 10” Attorneys.

  7. Mark Deniz has been deemed by The Lead Counsel Rating for providing exceptional legal representation to individuals and businesses.

  8. The firm is a member of the better business bureau who ensures quality service for its clients.

  9. The National Trial Lawyers - Top 100 Trial Lawyers

    Mark Deniz has consistently been named one of the National Trial Lawyers Top 100 Trial Lawyers.

  10. Mark Deniz is a member of the prestigious National College for DUI defense and has completed its intensive summer session curriculum conducted at Harvard Law School.

  11. Mark Deniz has received AVVO’s prestigious Clients’ Choice award

  12. The prestigious legal rating service AVVO has consistently given Law Offices of Mark Deniz a "Superb" rating.

  13. Proudly Serving the Community Service 2003

    Mark Deniz has proudly served as a member of the California state bar since 2003.

  14. Mark Deniz has consistently been named one of the National Trial Lawyers Top 100 Trial Lawyers.

What is an Ignition Interlock Device for San Diego DUI

A breath alcohol ignition interlock (IID) is a device that is installed in the dashboard of a person’s vehicle who has been required by the courts to have an ignition interlock device installed in their vehicle as a condition of having their license reinstated in order to drive. You will also be required by the DMV to provide proof of SR 22 coverage before they will reinstate your driver’s license.


How Does An Ignition Interlock Device Work?


The breath alcohol ignition interlock device is connected to a vehicles starter system. The ignition interlock device can be setup to register a failed reading anywhere from .00% BAC to slightly higher levels, but typically not above .04% BAC.


The breath alcohol ignition interlock device works by measuring the BAC or blood alcohol concentration also referred to as BAL or blood alcohol level of the vehicle’s driver before and during the operation of said vehicle.


If the blood alcohol concentration registered by the ignition interlock system is higher than the preprogrammed level that was set by the company that installed the ignition interlock device, the vehicle will not start. 


Also at preprogrammed intervals while the vehicle is in operation, the breath alcohol ignition interlock device will require breath samples from the vehicle operator in order for the vehicle to continue operating. If a breath sample is not provided, or the sample that is registered by the ignition interlock device exceeds the limit that has been preset by the ignition interlock provider, the unit will record the occurrence, warn the driver and then start its alarm, which will consist of the lights flashing, horn honking, etc. before shutting down.


The vehicle operator will be required to blow into the ignition interlock device in order to start their vehicle because the vehicle will not start without first providing a breath sample. Then typically after 10 to 15 minutes of running, the device will request another breath sample. Then a breath sample will be required approximately every 15 to 30 minutes afterwards. The reason for the frequent testing is to prevent a person from having a friend start their vehicle and then allowing the impaired driver to take over vehicle operation.


When it is time for a breath sample, the ignition interlock system will let the driver know that a sample is required. The ignition interlock system will allow enough time for the driver to safely pull to the side of the road before the sample must be given.

I found a video that gives an idea of how the of how the Interlock Ignition Device (IID) works. 

Breath Alcohol Ignition Interlock Device Pro’s & Con’s


An ignition interlock device has its proponents and opponents. Groups like MADD support the use of an ignition interlock device saying that the use of an ignition interlock device has proven to be up to 90% effective in the prevention of drunk driving.


While opponents of ignition interlock devices say that test results show the devices have numerous flaws and are not effective in reducing DUI or drunk driving incidents for first-time offenders.


One major flaw of an ignition interlock device is that items such as mouthwash can cause a vehicle not to start. Imagine you’re ready to leave for work in the morning and go out to start your vehicle, but it won’t start because it registered a BAC above the preset limit. What could cause a situation like this? Mouthwashes that most people use in the morning contain alcohol.


An ignition interlock device was originally implemented to prevent those who were considered hardcore alcoholics from drinking and driving after having been convicted of a San Diego DUI. Current proposals would mandate ignition interlock devices for all offenders in every state, in essence treating the person who was barely over the legal limit the same as the individual who had a blood alcohol concentration of .16% or twice the legal limit.


The breath alcohol ignition interlock device keeps a record of the device’s activity and the interlocked vehicles electrical system. This data will be downloaded each time the vehicle is taken in to be calibrated, which is typically set to 30, 60 or 90-day intervals.


If a violation is detected between service intervals, the vehicle must be taken to the ignition interlock service provider to be reset. When this happens a record of the violation will be sent to the offender’s probation officer. Depending on state laws a separate offense like this can be considered a violation of the terms of the offender’s probation, which can result in additional sanctions being imposed such as the offender’s probation being revoked.


Ignition Interlock Device Prices

The overall cost of installation, calibration and scheduled maintenance is the responsibility of the offender. An ignition interlock device will cost over $100 per month to upkeep and a couple hundred dollars to be installed. But the main goal is that their ignition interlock program is self sustaining since the DUI offender is required to pay the fees.

It is key that you hire
the best locally experienced criminal defense attorney to represent you that
you can afford. You should obtain a free consultation as soon as possible.

Hire a Proactive, affordable, and quality defense when you are facing San Diego DUI charges.  Whether you have been charged of a San Diego DUI, Poway DUI, La Mesa DUI, Santee DUI, Mission Valley DUI, Clairemont DUI, Point Loma DUI, La Jolla DUI, Carmel Valley DUI, Mira Mesa DUI, Pacific Beach DUI, Del Mar DUI, Carmel Valley DUI, Encinitas DUI, Oceanside DUI, Escondido DUI, Vista DUI, San Marcos DUI, Carlsbad DUI, El Cajon DUI it is vital you need to hire an attorney who knows how to defend your rights and can determine if the government can prove their case.  Contact the Law Office of Mark Deniz now for a free case evaluation. 


Latest, Proven Results

Outcome of Case: Dismissed

Felony Domestic Violence   
August 2017

Outcome of Case: Dismissed

DUI   
August 2017

Outcome of Case: Wet Reckless

DUI with a BAC of .13%. 
August 2017

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