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New Hampshire ignition interlock

Ignition interlock 
device information:

Service calls into Intoxalock before I had the service and after install have been helpful and courteous.

- Travis, New Hampshire Intoxalock driver

New Hampshire ignition interlock device laws

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Approved by the
State of New Hampshire:

What to do after getting a DWI can be confusing. Intoxalock is here to help. We have over 20 years of experience helping people just like you install an ignition interlock in New Hampshire and get back on the road.

Don’t let the thought of installing a car breathalyzer intimidate you. Our state specialists will help you find a local service center, schedule an installation near your home, answer all of your ignition interlock questions and walk you through the process of regaining your license as quickly as possible.

Intoxalock ignition interlock benefits:

  • #1 ignition interlock provider in New Hampshire
  • Largest service center network in the state
  • 50% fewer required calibrations than competitors
  • 24/7 customer service support
  • Affordable ignition interlock device pricing
  • Over 2,500 convenient locations nationwide
  • The fastest way to get back on the road legally
State Laws

Additional drunk driving resources:

State of New Hampshire ignition interlock & drunk driving laws:

First Conviction DWI

If you were convicted of a first offense DWI in New Hampshire, your license will be suspended for a minimum of nine months. In order to regain your driving privileges you may be required to install an Intoxalock ignition interlock device.

In order to regain your driving privileges you must:

  • Pay a $500 minimum fine
  • Serve nine month – two year license suspension
  • Participate in Impaired Driver Care Management Program (IDCMP) and fulfill necessary requirements
  • Provide proof of SR22 Insurance

Aggravated DWI

If you have been convicted of a first offense Aggravated DWI you must complete all items required for a first offense, in addition to the following:

  • Serve a minimum ten day jail sentence
  • Pay a $750 fine
  • Serve an 18 month – two year license suspension
  • Install an Intoxalock ignition interlock device for a minimum of one year by court order

More aggravated DWI details here.

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Second Conviction DWI

If you were convicted of a second offense DWI in New Hampshire, your license can be suspended for three years. You will be required to install the Intoxalock ignition interlock device in order to regain your driving privileges.

In order to regain your driving privileges you must:

  • Serve a minimum thirty day jail sentence
  • Pay a minimum $750 fine
  • Serve a minimum three year license suspension
  • Participate in Impaired Driver Care Management Program (IDCMP) and fulfill necessary requirements
  • Seven days in a Multiple DWI Offender Intervention Detention Center
  • Provide proof of SR22 Insurance
  • Install an Intoxalock ignition interlock device for a minimum of one year if so ordered
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Third & Subsequent Convictions DWI

If you were convicted of a third or subsequent DWI offense your license will be subject to indefinite driver license suspension. However, you may regain driving privileges after seven years and could be ordered the installation of an Intoxalock ignition interlock device.

To obtain your Hardship Permit, you must:

  • Serve a minimum 180 day jail sentence
  • Pay a minimum $750 fine
  • Indefinite License Suspension (may petition court after seven years)
  • Participate in Impaired Driver Care Management Program (IDCMP) and fulfill necessary requirements
  • Provide proof of SR22 Insurance
  • Install an Intoxalock Legacy ignition interlock device for a minimum of one year by court order
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Aggravated DWI

If you are convicted of an aggravated DWI, your jail time and penalties may be increased. An aggravated DWI can be caused by:

  • Driving 30 or greater mph over speed limit
  • Causing a collision that results in serious injury
  • Attempting to elude a Law Enforcement Officer
  • Having a passenger in the vehicle under 16 years of age
  • Your blood alcohol level was 0.16 or above
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This information is provided as a guideline only. Each case will vary.

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