The list of approved vendors is provided for drivers seeking the installation of an ignition interlock device (IID) due to a court order and to obtain a Texas Restricted Interlock License. This order often follows a second DWI conviction or a first DWI conviction with a Commercial Driver License (CDL) as part of probation. For the private use of an IID, such as installing a breathalyzer device for parents to monitor teenage drivers or employers to monitor employees, other vendors may be used.

For BAIID installation centers in Texas contact an approved vendor. Below the list of approved interlock companies is a list of the specific models that are approved for use in Texas.

This list is subject to change and nothing on this site should be considered legal advice. For more information on BAIID installation contact the Texas Department of Public Safety. For legal advice contact a licensed attorney.

Texas Approved BAIID Vendors

• Advantage Interlock, Inc  (800) 993-4990
• Alcohol Detection Systems, Inc  (800) Stop-DWI
• CST Inc, Austin TX  (512) 374-1833
• CST Inc, Des Moines, IA  (877) 777-5020
• Draeger Safety Diagnostics Inc  (866) 385-5900
• Guardian  (972) 353-5692
• Lifesafer Interlock of Texas  (866) 503-4500
• National Interlock Services of TX  (866) 863-4350
• Smart Start  (800) 880-3394

Approved Interlock Devices

• Alcohol Detection Systems DM-904
• Draeger 3530920
• Draeger XT
• Guardian 3060
• Guardian AMS2000
• Intoxilock
• Lifesafer FC100
• Smart Start SSI1000
• Smart Start SSI 20/20

Remember to follow the required procedures set forth by the Texas Department of Public Safety, ensure proper maintenance and calibration of the device, and consult an attorney for counseling on DWI and licensing matters.

GA has IID installers throughout the state.

DUI offenders in Georgia may have to have an ignition interlock device (IID), also known as an in car breathalyzer, installed in their vehicle before regaining driving privileges. If requried to have the IID breathalyzer installed the offender must follow specific procedures and use an approved ignition interlock service provider.

The device must be installed on every vehicle the offender owns or operates, and the IID will have to be used by anyone operating the vehicle before the vehicle will start. Employees may be able to operate an employer’s car within the scope of their business if the employer is notified of the IID requirement and proof of notification is kept in the vehicle.

In addition to the costs of breathalyzer IID installation the offender will have to pay for maintenance or calibration fees. If facing financial hardship the person may petition the court to allow an extended payment plan.


In order to complete the IID installation the person required to have the device must have an approved IID installed by a certified Ignition Interlock Service Provider. The following is a list of service providers according to the Georgia Department of Driver Services organized by city. This list is subject to change.

Athens, GA:  Custom Sound of Athens, Inc.  (706) 549-4844

Augusta:  Guardian Interlock  (706) 736-1700;                                                                                       Mobile Audio Concepts, LLC  (706) 863-3664

Canton:  Canton DUI & Defensive Driving (770) 479-6562

Carrollton:  Guardian Interlock of West Georgia (770) 830-0045

Columbus:  Kar Tunes (706) 323-0651

Conyers:  LifeSafer Interlock of North Georgia, Inc. (800) 633-1517

Cumming:  AA-Academy of Action Driving School, Inc. (770) 889-1023;                                     Express Emission Test (678) 947-5514

Dalton:  Signal Catchers, Inc.  (706) 259-7833

Douglasville:  Meineke Car Care Center (877) 777-5020

Dunwoody:  1A Smart Start of Dunwoody, Inc.  (770) 396-0614

Fayetteville:  Guardian Interlock of South Metro  (770) 460-6304

Gainesville:  Automotive Service and Performance  (678) 450-8101

Griffin:  The Bass Station  (770) 412-0740

Jonesboro:  Draeger Safety Diagnostics, Inc.  (770) 472-6434

Kennesaw:  Safety Interlock Systems, LLC  (770) 924-2255;                                                                    SGG Enterprises, Inc.  (770) 424-9111

Lawrenceville:  Expert Collision Center, Inc. (770) 682-6858

Macon:  Alpha Interlock  (478) 808-0353;                                                                                           LifeSafer Interlock of North Georgia Inc. (800) 633-1517

Marietta:  Draeger Safety Diagnostics, Inc.  (770) 422-8080;                                                        Guardian Interlock Systems  (800) 499-0994

Riverdale:  Guardian Interlock of South Metro Atlanta  (770) 478-8373

Rome:  A+ DUI Interlock Service (706) 290-9669

Roswell:  1A Smart Start  (770) 998-5677

Savannah:  Street Beats  (912) 353-7433

Stockbridge:  Guardian Interlock of South Metro (770) 389-3847;                                             Innovative Sounds  (770) 389-8292

Valdosta:  Audio Xtremes & Tint  (229) 242-5350;                                                                              LifeSafer Interlock of South Georgia, Inc.  (800) 892-6960

All DUI convictions may soon result in vehicle breathalyzers.

Is a new DUI Breathalyzer Ignition Interlock law going to be enacted by the federal government? In 1998 the US Congress passed the Transportation Equity Act of the 21st Century. This act in essence mandates states to require repeat DUI offenders have breathalyzer interlocks installed in their vehicles in order to receive increased highway funding.

In December of 2009 Senator Tom Udall, a Democrat from New Mexico, introduced new legislation that would mandate states enact laws requiring all DUI offenders have ignition interlock devices (IID) placed in their cars. New Mexico was the first state to adopt such measures, though Alaska, Arizon, Arkansas, Hawaii, Louisianna, Nebraska, New York, Utah, and Washinton have the same requirement.

If the bill passes, states will have to require the vehicle breathalzyer for all DUI offenders for a period of six months. The bill’s co-sponsor is Frank R. Lautenberg of New Jersey. The bill is also supported by Mothers Against Drunk Driving (MADD).

Proponents point to statistics showing a drop in repeat DUI offenders for states requiring IIDs. Meanwhile critics say that the devices are not reliable and may indicate false readings. While ignition interlock devices are not foolproof the statistics do show a drop in DUI recidivism when used.

The most obvious question regarding whether personal breathalyzers actually work is: are the devices accurate? Does the breathalyser indicator actually reflect the BAC of the user. In large part this depends on the model of breathalyzer, the type of sensor the breathalyzer uses, and the calibration and maintenance that the breathalyzer has received.

The BACTrack Select S80 uses fuel cell sensors and retails for around $249.99.

Many of the professional grade hand held breathalyzers that use fuel cell technology sensors measure the electrical charge produced by electrochemical interactions with alcohol.  Fuel cell sensors are less likely to give false readings from ketones in diabetics or from cigarette smoke or mouthwash. However, they do require calibration or replacement of the fuel cell sensor.

Other breathalyzers use semi-conductor sensors to measure the amount of alcohol released as breath from the lungs. These breathalizers come in a variety of accuracy levels, depending on the materials used. Some of the semi-conductor models are as accurate as fuel cell breathalyzers while others are much less accurate. For an accurate breathalyzer you should expect to spend over $90, and you should be very leery of the cheap mini-breathalyzers with an accuracy of +-.02 or greater.

Besides the accuracy of the device police officials have expressed concern over drivers using a breathalyzer and gaining false confidence in their ability to drive. This means that even if a breathalyzer accurately reflects your BAC and indicates you are under the legal limit, you may still be arrested for a DUI, or DWI, if the police officer believes you are impaired. Thus, a breath alcohol test may not work to prevent a DUI arrest. In nearly all states the legal limit is .08, but studies have shown that drivers may become impaired at levels as low as .05. Thus, a person should use caution in deciding to drive based on a BAC level close to the legal limit.

There are also concerns of breathalyzer devices being misused as a device for party or drinking games. There are reports of drinking games consisting of using an alcohol breath test to see who can achieve the highest BAC. Such as games may cause blood alcohol poisoning resulting in severe vomiting, coma inducement, or even death. Such games are particularly prevalent and dangerous for inexperienced drinkers such as teenagers and college students.

In short, if you wish to use a personal breathalyzer ensure you purchase a professional grade device with the greatest accuracy possible. This means one around +-.005. There are a variety of models that can achieve this level of accuracy, but they must be properly maintained and calibrated, which does have additional costs. In addition, the user should realize the limitations of the device and that regardless of the breathalyser results, they may still be charged with a DUI if impaired. Finally, do not abuse any type of breath alcohol test by using it in a drinking game to compete for the highest BAC. Check breathalyzer reviews on specific models.

This is one of the smallest breathalyzers available weighing less than an ounce and fitting on a keychain.

If you are in the market for purchasing a small personal keychain breathalyzer you may want to consider the Breathkey. Unlike many keychain breathalizers the Breathkey has a digital readout of the user’s blood alcohol content (BAC). Most mini breathalyzers simply use a red, yellow, and green LED system to indicate BAC ranges. This device, however, provides the actual BAC level as a number. It is important to note that any personal breath test may not be accurate and may not be usable as a defense to a DUI/DWI charge.

The Breathkey also boasts a fuel cell sensor which does make its accuracy more stable over time. However, as with all breathalyzers it will have to be calibrated periodically, for which there is typically a calibration fee. The fuel cell sensors also use no power to operate while the more widespread semiconductor alcohol sensor does require power and warmup time to operate.

This alcohol breath analyzer's digital readout indicates when you should blow and beeps when you should stop.

The Breathkey is an easy to use personal breathalyzer. You should always wait 10 to 20 minutes after your last alcoholic beverage to ensure that the alcohol is removed from your mouth. When operating, you merely press the start button, wait for the device to read BLOW, then blow into the mouthpiece for four seconds until the tester beeps, and then wait for your BAC reading.

The Breathkey has been approved by the FDA, but not the Department of Transportation (DOT). This means that it is safe to use but the level of accuracy does not meet DOT standards. The Breathkey has an accuracy of plus or minus .01 BAC at .08 BAC. DOT standards, and the breathalyzers used by police officers, have an accuracy range of plus or minus .005 BAC at .08 BAC. So, while the Breathkey is a safe device that does measure blood alcohol content keep this accuracy range in mind when making decisions regarding drinking and driving. Further, remember that you may be charged regardless of BAC indicators.

This device does not have the novel features of many other keychain mini-breathalyzers, such as a flashlight, stopwatch, or alarm, but is marketed closer to a professional grade breathalyzer.

The Breathkey can be purchased for the retail price of $69.95. This is more expensive than other mini breathalyzers but it does have the fuel cell technology and provides a digital readout that other cheaper mini breath testers do not have. It is available from the Breathkey website or is on Amazon advertised as “The Digital Alcohol Breath Tester with Professional Features.”

More information on mini breathalyzers in general can also be found here. There is also a review of the GTMax Mini Breathalyzer, a much cheaper keychain alcohol tester option.

New York has ignition interlock providers in cities across the state.

New York State will allow some people convicted of an alcohol related offense to regain limited driving privileges with the installation of a certified ignition interlock device (IID). The IID will prevent the driver of a vehicle from starting the car if a preset level of alcohol is detected on the driver’s breath.

In order to take advantage of this program the person must use a New York approved IID and have it installed by an approved ignition interlock installer. The companies below have been certified by the state and may be contacted to locate installation centers across the state. Contact information is provided for some.

Draeger Safety Inc. 800-332-6858

Interceptor Ignition Interlock, Inc. 800-215-1007

Intoxalock by CST, Inc. 877-777-5020

National Interlock Service 800-871-5462

Sens-O-Lock Determinator 518-435-1099

Smart Start 800-880-3394

The costs of the device are paid for by the participant and include the price of the interlock or the leasing fee, the cost of installation, and perhaps calibration and maintenance fees.

Alamogordo

• AAAA Smart Start Alamogordo
• Adobe Interlock Las Cruces
• Alamo-Rosa Service Center

Albuquerque

• 1st Native Interlock
• A Interlock
• AA Hi-Tech Interlock
• AA Hi-Tech Interlock II
• AAAA Smart Start Albuquerque
• Active Interlock, LLC
• Adobe Interlock Albuquerque, Inc.
• Affordable Interlock
• Alcohol Awareness Technologies, Inc.
• Budget Interlock
• Consumer Safety Technologies
• D L. Customs & Interlock
• Guardian Interlock Systems Albuquerque
• Zia Interlock

Angel Fire

• American Interlock
• Cartunes
• New Mexico Interlock – Las Vegas

Artesia

• Payday Auto Interlock

Belen

• AA Hi-Tech Interlock
• Adobe  Interlock of Albuquerque
• Guardian Interlock Systems Albuquerque

Bernal

• New Mexico Interlock – Las Vegas

Bernalillo

• A Interlock Albuquerque
• AA Hi-Tech Interlock
• Guardian Interlock Systems Albuquerque

Bosque Farms

• AAAA Smart Start Bosque Farms

Carlsbad

• Jay’s Automotive – LifeSaver
• Payday Auto Interlock

Chama

• American Interlock

Clines Corners

• New Mexico Interlock – Las Vegas

Clovis

• AAAA Smart Start Clovis
• Alcohol Awareness Technologies
• Sure Trac Interlock

Crownpoint

• Adobe Interlock of Gallup
• Adobe Interlock of Grants

Cuba

• American Interlock

Deming

• AAAA Smart Start Las Cruces
• Tinley Tee Tire Co., Inc

Edgewood

• Adobe Interlock Inc. Moriarty
• New Mexico Interlock – Las Vegas

Espanola

• American Interlock
• Cartunes
• New Mexico Interlock – Las Vegas

Estancia

• Adobe Interlock Inc. Moriarty

Farmington

• AAAA Smart Start Farmington
• Affordable Interlock
• Chap Inc. DBA Harris Interlock
• Guardian Interlock Farmington

Ft. Sumner

• New Mexico Interlock – Las Vegas
• Sure Trac Interlock

Gallup

• AAAA Smart Start Gallup
• Adobe Interlock of Gallup
• Alcohol Awareness Technologies
• Automotive Machine Works
• Otero’s Safe & Lock

Grants

• Adobe Interlock of Grants
• Consumer Safety Technology
• Guardian Safety Technology

Hobbs

• Draeger Safety Diagnostics, Inc.
• Payday Auto Interlock

Las Cruces

• AAAA Smart Start Las Cruces
• Adobe Interlock Las Cruces
• Alcohol Awareness Technologies
• Auto Electric Service
• Las Cruces Interlock
• Tirecenter Plus Inc.

Las Vegas

• Alcohol Awareness Technologies
• Guardian Interlock Systems Albuquerque
• Interlocker
• New Mexico Interlock – Las Vegas
• Northgate Interlock

Lemitar

• Quick & Easy Tire & Lube

Los Lunas

• A Interlock Albuquerque
• AA Hi-Tech Interlock
• Adobe Interlock Albuquerque

Lovington

• Payday Auto Interlock

Magdalena

• Quick & Easy Tire & Lube

Milan

• Adobe Interlock of Grants

Mora

• New Mexico Interlock – Las Vegas

Moriarty

• AA Hi-Tech Interlock
• Adobe Interlock Inc. Moriarty

Mountainair

• A Interlock Albuquerque
• Adobe Interlock Inc. Moriarty
• Guardian Interlock Systems Albuquerque

Pecos

• New Mexico Interlock – Las Vegas

Placitas

• A Interlock Albuquerque

Portales

• Sure Trac Interlock

Quemado

• Quick & Easy Tire & Lube

Questa

• American Interlock
• Cartunes
• New Mexico Interlock – Las Vegas

Raton

• Interlocker
• Lark’s In & Out Lube
• New Mexico Interlock – Las Vegas
• Northgate Interlock

Red River

• Cartunes

Rio Rancho

• 1st Interlock – Draeger
• AA Hi-Tech Interlock
• AAAA Smart Start New Mexico
• Adobe Interlock of Albuquerque
• A-Interlock Albuquerque
• Guardian Interlock Systems Albuquerque

Roswell

• AAAA Smart Start Roswell
• Overmier Services, LLC
• Payday Auto Interlock

Rowe

• New Mexico Interlock – Las Vegas

Ruidoso

• AAAA Smart Start Alamogordo
• Alcohol Awareness Technologies
• Payday Auto Interlock

San Antonio

• Quick & Easy Tire & Lube

San Jon

• Terry’s Service Center

Santa Fe

• AAAA Smart Start Santa Fe
• Adobe Interlock SF
• Auto Angel, Inc.
• Consumer Safety Technologies
• LA Interlock
• New Mexico Interlock – Santa Fe

Santa Rosa

• New Mexico Interlock – Las Vegas
• Northgate Interlock
• Sure Trac Interlock

Silver City

• AAAA Smart Start Silver City
• Consumer Safety Technology

Socorro

• Quick & Easy Tire & Lube

Springer

• New Mexico Interlock – Las Vegas
• Northgate Interlock

Taos

• American Interlock Taos
• Cartunes
• New Mexico Interlock – Las Vegas

Thoreau

• Adobe Interlock of Gallup

Tierra Amarilla

• American Interlock

Tijeras

• A-Interlock Albuquerque

Truth Or Consequences

• Consumer Safety Technology
• Guardian Interlock Systems Albuquerque

Tucumcari

• Guardian Interlock Systems Albuquerque
• New Mexico Interlock – Las Vegas
• Sure Trac Interlock

Zuni

• Adobe Interlock of Gallup

Many of these companies have mobile service available by appointment. Contact the specific installation centers for details.

Maryland has approved ignition interlock providers for its program.

The companies listed below are approved by the Maryland Department of Transportation’s Motor Vehicle Division to provide ignition interlock devices (IID), or in car breathalyzers. These providers may be contacted to find IID installation services in your area.

An ignition interlock device requires the driver of the vehicle to blow into the device and will measure the driver’s blood alcohol content (BAC). If the person’s BAC exceeds the a preset limit the car will not start.

The costs of installation, leasing of the device, as well as maintenance and calibration costs must be paid by the person in the program.

The procedures for participating in the Maryland Ignition Interlock Program are provided to eligible drivers by a Maryland District Court, the Office of Administrative Hearings, and the Medical Advisory Board.

The following companies are Maryland approved IID providers:

Alcohol Detection Systems  800-786-7394

Draeger Interlock  800-332-6858

Guardian Interlock  800-499-0994

National Interlock  800-374-5760

Smart Start Interlock 800-880-3394

New Mexico requires DWI offenders to obtain an ignition interlock license.

The device requires the driver to blow for several seconds into the breathalyzer, which determines the blood alcohol content (BAC) of the driver. If a preset BAC level is exceeded the vehicle will not start. The IID may also have the driver submit to rolling tests, or retests while the car is being driven. These retests help ensure the driver is the individual who gave the original breath sample.

The system must be purchased or leased and installed by an approved Provider. A list of approved New Mexico ignition interlock installers is also available.

The state has set out a list of procedures that must be followed in order to obtain the Interlock License.

You should first make sure that you qualify for the ignition interlock license. To do this contact the Motor Vehicle Division (MVD) at 888-683-4636.

Next, you will have to show positive proof of identification.

You will also have to provide proof of financial responsibility. This means an insurance policy, insurance certification, insurance binder, or a State Treasurer’s Certificate of Deposit or a Surety Bond Certificate issued by the Mandatory Insurance Division of the MVD.

You must show the lease agreement or contract with the installer as proof that an ignition interlock device has been attached to all cars you will drive.

Complete an Affidavit of Acknowledgment, have it notarized, and submit it to the MVD with $53.00 for the ignition interlock license fee. The affidavit can be faxed to you by calling 888-683-4636 or can be downloaded from http://ipl.unm.edu/traf/certification/InterlockLic.htm#Insurance1. Remember, the affidavit must be notarized before you take it to the Motor Vehicle Division (MVD).

Typical costs will include the installation fee, a monthly rental rate, and the license fee, which is currently $53.00. The ignition interlock device will have to be periodically calibrated at the approved installation service center.

Remember, a New Mexico ignition interlock license is different from a limited license. For more information contact the MVD or visit their website. This is provided as general information and for specific legal questions regarding a DWI or license suspension contact a New Mexico licensed attorney.

An ignition interlock device, also known as an in-car breathalyzer or breath alcohol test, is connected to the vehicles ignition system. The driver must blow into the device for several seconds in order for the device to ascertain the driver’s blood alcohol content (BAC). If the amount of alcohol in the driver’s blood exceeds a predetermined level the vehicle will not start.

Connecticut offers the Ignition Interlock Device Program for second DUI, vehicular manslaughter, and vehicular assault offenders.

The ignition interlocks approved by the Connecticut Department of Motor Vehicles (DMV) also require additional retests, or rolling tests, as the vehicle is being driven. Of course, for safety reasons the car will not shut off if the driver fails the retest. Rather, an alarm will sound, often consisting of flashing the lights and sounding the horn. This is to ensure that the driver is the same person who originally blew into the ignition interlock system. Some ignition interlock devices also take a picture when the breathalyzer is used.

In addition, attempting to tamper, remove, or cheat the interlock system may result in an addition conviction and a driver license suspension. A driver’s license suspension will also result from failure to comply with the Connecticut Ignition Interlock Program requirements.

The program is available for people convicted of a second Driving Under the Influence of Alcohol or Drugs (DUI), a conviction for Vehicular Assault, or a conviction for Vehicular Manslaughter. The person must first have served one year of a driver license suspension before they are allowed to use an ignition interlock to regain their driving privileges.

To be able to take part in the Connecticut ignition interlock program the person must also meet the eligibility requirements and follow the procedures for the program. The eligibility requirements include having a Connecticut driver license, being eligible for reinstatement, and not have further suspensions or pending suspensions.

After meeting all of the interlock program’s eligibility requirements the personmust then fill out and submit an Ignition Interlock Device Application (Form RS-1). This form can be found at the DMV’s website. Any eligible persons should also be contacted by the Connecticut DMV sometime before their one year suspension is over regarding their eligibility and an application for the program.

Finally, after meeting all of the eligibility requirements, submitting the application, and gaining acceptance into the interlock program the person should have an ignition interlock device installed on all of the vehicles they own or operate. In order to be accepted into Connecticut’s ignition interlock program all vehicles owned or operated by the person must have a breathalyzer interlock device installed. Connecticut has approved four vendors to supply the interlock systems. The installation must then be verified with the Connecticut Department of Motor Vehicles (DMV).

This is provided as general information and specific issues regarding DUI offenses, license suspensions, the ignition interlock device program, or other legal matters should be referred to an attorney licensed in Connecticut.