Ignition Interlock Devices in Texas

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Smart Start Ignition Interlock: We’re Here for the The Lone Star State

As a company proudly based here in the Lone Star State, we’re honored to offer our fellow Texans our latest in IID technology. With Smart Start, you can count on: 

  • Statewide coverage for Ignition Interlocks and service 
  • Affordable pricing 
  • Friendly, knowledgeable, and bilingual customer care available 24/7 

Convenient Locations in Texas 

Wherever you live in Texas, it’s simple to find a Smart Start Ignition Interlock Device near you:

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How do you get your license back in Texas after a DUI? 

To have your license reinstated, you may be required to fulfill some or all of these conditions, as described by the Texas Department of Public Safety.

The following is general information, not legal advice, about the conditions you might have to complete before applying for a reinstated license.

Phase 1: Get Started

Consult Your Legal Counsel

License Hearing

Phase 2: Judicial Court Settings

Court Hearings and Appearances

Phase 3: Ignition Interlock Device

Schedule Installation

Obtain SR-22 Certificate

Phase 4: State Requirements

Assessment and Education

Pay Fees and Complete Forms

Phase 5: Monitoring and Calibration

Service Appointments

Phase 6: Device Removal

Court-Authorized Removal

Information as of March 1, 2025.

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Disclaimer

Please note that the information in the following sections is for general informational purposes only. The materials contained herein are not intended to and should not be relied upon or construed as a legal opinion or legal advice or to address all circumstances that might arise. Information may be dated and may not reflect the most current developments. You should contact your attorney to obtain advice with respect to any particular legal matter. Only your individual attorney can provide assurances that the information contained herein – and your interpretation of it – is applicable or appropriate to your particular situation. Smart Start expressly disclaims all liability regarding actions taken or not taken based on any or all content.

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Understanding Texas DUI/DWI Requirements

Basic DUI/DWI Requirements

We know that navigating a DUI or DWI can be overwhelming. Understanding the requirements and process after an alcohol related driving offense in Texas is an important step to getting back on the road. We’ve put together some general information to help you get started. 

A person is considered legally intoxicated when their blood alcohol concentration (BAC) reaches .08%, as specified by the Texas Department of Transportation (TXDOT). A driver who gives a breath or blood sample that indicates a BAC of .08% or higher can be arrested for driving while intoxicated (DWI).  

If you’re wondering what the difference is between a DUI and DWI in Texas, you’re not alone. You may hear these terms used interchangeably, but they refer to different violations in Texas. In the simplest terms, the difference between DWI and DUI in Texas boils down to age. Only drivers who are too young to legally drink alcohol can be charged with DUI. 

License Reinstatement

Starting the journey to restore your Texas driver’s license after a DUI or DWI? First, know that the State of Texas will suspend your license for anywhere from 90 days to 2 years, depending on the facts of your case (such as blood alcohol content and whether it’s your first offense.) 

To have your license reinstated, you may be required to fulfillsome or all of these conditions, as described by the Texas Department of Public Safety: 

  • Installing an Ignition Interlock Device (IID) on any vehicles you drive 
  • Completing an alcohol education course 
  • Paying fees to the state 
  • Serving jail time 

Check the Texas Department of Public Safety’slicense eligibility portal to find out if you qualify for a reinstated license. When you’re ready to have your license reinstated, you’ll need tosubmit the required paperwork and fees to the Texas Department of Public Safety. 

You may also be eligible to apply for an Occupational Driver’s License, which allows you to drive to work, school, or family commitments while your license is suspended. You can learn more on theTexas Occupational Driver’s License information page. 

How much does an Ignition Interlock Device cost in Texas?

Smart Start will help you find an Ignition Interlock Device solution that fits your needs and your budget. We offer:

  • Checkmark Fast, customized quotes from our Program Advisors
  • Checkmark No long-term contracts required
  • Checkmark Pricing that fits your budget

See our resources on the cost of IIDs in Texasfor more information. 

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How much does an Ignition Interlock Device cost in Texas?

Learn more

Texas FAQs

It’s important to thoroughly understand how IIDs work, and what you’ll need to do to stay in compliance with your program. Get fast answers to your most common questions about Interlocks in Texas. 

What is an Ignition Interlock Device (IID)?

What is an Ignition Interlock Device (IID)?

Viewing 7 Topics

How Does It Work?

How Does It Work?

Show 8 Topics

How Do I Get An Appointment?

How Do I Get An Appointment?

Show 3 Topics

How Can We Help?

How Can We Help?

Show 3 Topics

What is an Ignition Interlock Device (IID)?

An Ignition Interlock Device (IID), also called a car breathalyzer, is a device that measures breath alcohol content (BrAC). It is typically installed in your vehicle as part of an administrative or legal requirement after drunk driving. Learn more about Smart Start's Ignition Interlock here. 

How do I know if Smart Start’s devices are compliant with my program?

Smart Start’sIgnition Interlock Devices adhere to all the guidelines set by the National Highway Traffic Safety Administration (NHTSA) and the Texas Department of Public Safety (DPS). Smart Start is also on the approved Ignition Interlock vendors list for the state of Texas. 

Is an Ignition Interlock Device mandatory for all DUI convictions in Texas?

In Texas, the Ignition Interlock Device requirements depend on the specifics of the DUI conviction. For certain offenses, the court may mandate the installation of an IID.

What if I have a requirement, but I don’t own a vehicle?

In Texas, if you have an Ignition Interlock Device (IID) requirement, but you don’t own a vehicle, you will need to consult with your probation officer or attorney to determine your next steps. 

Do I need the device on all of my vehicles?

In the state of Texas, the judge will determine on how many of your vehicles you are required to install the Ignition Interlock Device on. 

How do I know if I need a camera/GPS/etc.?

In the state of Texas, your judge or your State authority will specify what you need in addition to your Ignition Interlock Device (IID). In some counties in Texas, cameras are required.

Does the camera watch me all the time?

No, the camera will only take a picture as you provide a breath sample for the device. There is no live video feed. 

What happens after I get my DWI?

In  Texas, after you get a DWI, you will have a court date. You will be ordered either by a judge or a court to install an Ignition Interlock Device (IID) based on your condition—pre-trial bond, probation, etc. 

How do the consequences differ for a first and second DUI? Third? Fourth?

In Texas, the consequences for DUI offenses escalate with each subsequent conviction. Each case varies based on the specifics of the offense, including the driver’s BAC level, whether any property damage or injuries occurred, and other factors. Legal counsel should be sought for personalized advice from a Texas DUI Lawyer or criminal defense attorney. 
  • First DUI Offense: Penalties can include a fine, jail time, and license suspension. The severity depends on specific circumstances such as BAC levels. 
  • Second DUI Offense: Increased fines, longer jail time, and extended license suspension periods are common. This reflects the state’s escalating response to repeat offenses. 
  • Third DUI Offense: This is considered a serious offense and can lead to significant fines, lengthy jail sentences, and a prolonged or indefinite license suspension. 
  • Fourth and Subsequent Offenses: These are treated with utmost severity, often resulting in the highest level of penalties permissible under law, which can include long-term jail sentences, license revocation and heavy fines. 

What happens if I fail a breath test on the Ignition Interlock Device?

In the state of Texas, if you fail a test, your Ignition Interlock Device (IID) will go into a 2-minute lockout before asking you to re-test. If you fail your re-test, the IID will go into lockout again. This process continues until you are able to pass a test.  HOWEVER, you will be forced to endure any consequences specified by your State authority if you register a violation. If you exceed the allowed number of violations within a service term, you will enter into a countdown period, during which you must have your Ignition Interlock Device serviced, or you will be locked out of your vehicle completely.  If you go into violation lockout, you will need to either obtain a six-hour unlock code from Smart Start so you can drive to a service center, or you will need to tow your vehicle to the nearest Smart Start service center. 

What constitutes a violation in my state?

In the state of Texas, any and all of the following may constitute a violation: 
  • Testing at or above the fail level of .030 
  • Skipping or failing a rolling re-test 
  • Missing your scheduled IID service appointment 

How often does my IID need to be serviced?

Texas mandate dictates that you will need to service your Ignition Interlock Device (IID) once every 30 days as determined by the date of your installation. 

Where can I go for service? Anywhere, or just within my state?

Texas state law dictates that you can service your Ignition Interlock Device at any Smart Start service center nationwide unless informed otherwise by your State authority. 

How do I know who my state authority is?

In the state of Texas, your State authority could be your judge, attorney, probation officer, pre-trial bond officer, or any other entity indicated by the court.  If you’re not sure who your State authority is, ask the court. 

Where do I send a record of my service appointments?

Smart Start will send a record of your service appointments to your State authority on your behalf at no additional cost to you. You should always bring your receipts for service to your State authority. 

Where does installation fall based on my condition?

In Texas, your attorney or State authority will tell you when you are eligible to install an Ignition Interlock Device (IID) and receive credit for that time.

What do I need to bring to my installation in Texas?

Once you have scheduled your Ignition Interlock Device (IID) installation with Smart Start, you will need to bring the following to your IID installation appointment: 
  • Two forms of photo identification 
  • Any and all court paperwork that has been given to you 
  • Proof of residence 
  • Car insurance and vehicle registration 
If the vehicle is not yours, you will need to provide a letter of permission from the owner of the vehicle stating that you are allowed to install an Ignition Interlock Device. 

What should I bring back to my State authority after my device is installed?

Once the Ignition Interlock Device is installed, you will need to bring back any and all paperwork that you were given by Smart Start at the time of installation—including your lease, time and date of your next appointment, client checklist, and receipt for your first month’s payment. 

How can I pay for calibration?

You can pay for calibration via cash, credit card, or debit card at the Smart Start service center at the time of service. 

What do I need for removal?

In the state of Texas, an Ignition Interlock Device (IID) provider cannot remove a device without proper State authority authorization from the court. We will receive something from the court, which we will process. 48 hours after that approval has been processed, you will be eligible for removal. As long as the device is in your possession, the state of Texas deems you financially responsible for it. 

What do I need to install voluntarily?

To install an Ignition Interlock Device (IID) on your vehicle or a family member’s vehicle voluntarily, complete our online form or call Smart Start at 800.831.3299 to speak with a Program Advisor and schedule a voluntary installation appointment. Make sure to bring your photo ID, vehicle registration and proof of vehicle insurance. Check to see if your insurance offers any discounts for voluntary interlock installation—especially for children going off to college. 

What is an Ignition Interlock Device (IID)?

What is an Ignition Interlock Device (IID)?

Viewing 7 Topics

What is an Ignition Interlock Device (IID)?

An Ignition Interlock Device (IID), also called a car breathalyzer, is a device that measures breath alcohol content (BrAC). It is typically installed in your vehicle as part of an administrative or legal requirement after drunk driving. Learn more about Smart Start's Ignition Interlock here. 

How do I know if Smart Start’s devices are compliant with my program?

Smart Start’sIgnition Interlock Devices adhere to all the guidelines set by the National Highway Traffic Safety Administration (NHTSA) and the Texas Department of Public Safety (DPS). Smart Start is also on the approved Ignition Interlock vendors list for the state of Texas. 

Is an Ignition Interlock Device mandatory for all DUI convictions in Texas?

In Texas, the Ignition Interlock Device requirements depend on the specifics of the DUI conviction. For certain offenses, the court may mandate the installation of an IID.

What if I have a requirement, but I don’t own a vehicle?

In Texas, if you have an Ignition Interlock Device (IID) requirement, but you don’t own a vehicle, you will need to consult with your probation officer or attorney to determine your next steps. 

Do I need the device on all of my vehicles?

In the state of Texas, the judge will determine on how many of your vehicles you are required to install the Ignition Interlock Device on. 

How do I know if I need a camera/GPS/etc.?

In the state of Texas, your judge or your State authority will specify what you need in addition to your Ignition Interlock Device (IID). In some counties in Texas, cameras are required.

Does the camera watch me all the time?

No, the camera will only take a picture as you provide a breath sample for the device. There is no live video feed. 

How Does It Work?

How Does It Work?

Show 8 Topics

What happens after I get my DWI?

In  Texas, after you get a DWI, you will have a court date. You will be ordered either by a judge or a court to install an Ignition Interlock Device (IID) based on your condition—pre-trial bond, probation, etc. 

How do the consequences differ for a first and second DUI? Third? Fourth?

In Texas, the consequences for DUI offenses escalate with each subsequent conviction. Each case varies based on the specifics of the offense, including the driver’s BAC level, whether any property damage or injuries occurred, and other factors. Legal counsel should be sought for personalized advice from a Texas DUI Lawyer or criminal defense attorney. 
  • First DUI Offense: Penalties can include a fine, jail time, and license suspension. The severity depends on specific circumstances such as BAC levels. 
  • Second DUI Offense: Increased fines, longer jail time, and extended license suspension periods are common. This reflects the state’s escalating response to repeat offenses. 
  • Third DUI Offense: This is considered a serious offense and can lead to significant fines, lengthy jail sentences, and a prolonged or indefinite license suspension. 
  • Fourth and Subsequent Offenses: These are treated with utmost severity, often resulting in the highest level of penalties permissible under law, which can include long-term jail sentences, license revocation and heavy fines. 

What happens if I fail a breath test on the Ignition Interlock Device?

In the state of Texas, if you fail a test, your Ignition Interlock Device (IID) will go into a 2-minute lockout before asking you to re-test. If you fail your re-test, the IID will go into lockout again. This process continues until you are able to pass a test.  HOWEVER, you will be forced to endure any consequences specified by your State authority if you register a violation. If you exceed the allowed number of violations within a service term, you will enter into a countdown period, during which you must have your Ignition Interlock Device serviced, or you will be locked out of your vehicle completely.  If you go into violation lockout, you will need to either obtain a six-hour unlock code from Smart Start so you can drive to a service center, or you will need to tow your vehicle to the nearest Smart Start service center. 

What constitutes a violation in my state?

In the state of Texas, any and all of the following may constitute a violation: 
  • Testing at or above the fail level of .030 
  • Skipping or failing a rolling re-test 
  • Missing your scheduled IID service appointment 

How often does my IID need to be serviced?

Texas mandate dictates that you will need to service your Ignition Interlock Device (IID) once every 30 days as determined by the date of your installation. 

Where can I go for service? Anywhere, or just within my state?

Texas state law dictates that you can service your Ignition Interlock Device at any Smart Start service center nationwide unless informed otherwise by your State authority. 

How do I know who my state authority is?

In the state of Texas, your State authority could be your judge, attorney, probation officer, pre-trial bond officer, or any other entity indicated by the court.  If you’re not sure who your State authority is, ask the court. 

Where do I send a record of my service appointments?

Smart Start will send a record of your service appointments to your State authority on your behalf at no additional cost to you. You should always bring your receipts for service to your State authority. 

How Do I Get An Appointment?

How Do I Get An Appointment?

Show 3 Topics

Where does installation fall based on my condition?

In Texas, your attorney or State authority will tell you when you are eligible to install an Ignition Interlock Device (IID) and receive credit for that time.

What do I need to bring to my installation in Texas?

Once you have scheduled your Ignition Interlock Device (IID) installation with Smart Start, you will need to bring the following to your IID installation appointment: 
  • Two forms of photo identification 
  • Any and all court paperwork that has been given to you 
  • Proof of residence 
  • Car insurance and vehicle registration 
If the vehicle is not yours, you will need to provide a letter of permission from the owner of the vehicle stating that you are allowed to install an Ignition Interlock Device. 

What should I bring back to my State authority after my device is installed?

Once the Ignition Interlock Device is installed, you will need to bring back any and all paperwork that you were given by Smart Start at the time of installation—including your lease, time and date of your next appointment, client checklist, and receipt for your first month’s payment. 

How Can We Help?

How Can We Help?

Show 3 Topics

How can I pay for calibration?

You can pay for calibration via cash, credit card, or debit card at the Smart Start service center at the time of service. 

What do I need for removal?

In the state of Texas, an Ignition Interlock Device (IID) provider cannot remove a device without proper State authority authorization from the court. We will receive something from the court, which we will process. 48 hours after that approval has been processed, you will be eligible for removal. As long as the device is in your possession, the state of Texas deems you financially responsible for it. 

What do I need to install voluntarily?

To install an Ignition Interlock Device (IID) on your vehicle or a family member’s vehicle voluntarily, complete our online form or call Smart Start at 800.831.3299 to speak with a Program Advisor and schedule a voluntary installation appointment. Make sure to bring your photo ID, vehicle registration and proof of vehicle insurance. Check to see if your insurance offers any discounts for voluntary interlock installation—especially for children going off to college. 

See What Everyone Says About Our Ignition Interlock

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July 12, 2025
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July 12, 2025
"The customer service rep was very kind and helpful to me. I would give her 10 stars if I could!"
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