Who has to install one in Vermont
Program run by: Vermont DMV (Commissioner) · agency page
Law: 23 V.S.A. 1213 (ignition interlock RDL/IIC); 23 V.S.A. 1207a (interlock revolving fund); DMV Rule (secure.vermont.gov/SOS/rules/display.php?r=71) · read it
For the rule that applies to you, read your court order or the letter from the DMV.
A judge can order an interlock in other cases too. Your court order or DMV letter is what binds you.
Where each company can install in Vermont
You'll go back to the same company's locations for service for the whole order, so check that one is close to where you live and work before you book.
Locations as each company lists them on its own locator (Smart Start, Intoxalock, LifeSafer, Low Cost Interlock), pulled Oct 2026. Some shops serve more than one company. Alcohol Detection Systems doesn't publish a locator we could read.
Interlock companies approved in Vermont
- In Vermont
- 33 service locations listed
- Nationwide
- On 37 of 44 state lists
- 12 months, filed fees
- $1,427–$1,552
- App rating
- 1.7 from 899 (App Store)
- In Vermont
- 5 service locations listed
- Nationwide
- On 19 of 44 state lists
- 12 months, filed fees
- $1,215–$1,365
- App rating
- 1.4 from 11 (App Store)
LifeSafer
Listed as “LifeSafer of Vermont”- In Vermont
- 3 service locations listed
- Nationwide
- On 34 of 44 state lists
- 12 months, filed fees
- $1,205–$1,355
- Nationwide
- On 28 of 44 state lists
Guardian
Listed as “Guardian Interlock”- Nationwide
- On 16 of 44 state lists
- Nationwide
- On 12 of 44 state lists
- Monitech (installer list per search summary; page itself names none)
From the state's approved list (read it). Use a company on this list, or the install won't count. 12-month figures are lease, install and removal from each company's filed or published fee schedule, not Vermont prices; see how we add them up.
Related guides
InterlockCompare is independent and doesn't make, sell or install interlocks. Not legal advice.