Ignition Interlock for Commercial Vehicles


We’re dedicated to enhancing road safety for business fleet managers and owners who operate commercial fleet operations. Our ALCOLOCK™ V3 Ignition Interlock device is engineered to set industry standards and contribute to safer roads for everyone.

About ALCOLOCKTM V3 Commercial Vehicle Breathalyzer

The ALCOLOCK™ V3 is an in-vehicle ignition interlock device tailored for both personal and commercial use. For business fleet managers and owners who operate commercial fleet operations and commercial drivers requiring an IID, the ALCOLOCK™ V3 stands out as the ideal choice.

This device is built to endure high vibrations, extreme temperatures, and challenging environments without compromise. And here’s the best part – it’s not just for commercial vehicles; it’s suitable for any motorized vehicle or machinery. Our flexible leasing plans and rent-to-own options make it accessible to everyone. Plus, it comes with Wi-Fi connectivity for seamless use.

Key Features

1-year warranty included:

Your device is fully covered for a year, ensuring its longevity.


Tailored to meet consumer and workplace safety requirements.

Durable design:

It thrives in tough working conditions

Highly accurate:

Trustworthy electrochemical sensor for precise test results.

Record keeping:

Keeps track of your records and important dates.

Calibration reminders:

Convenient reminders for regular maintenance.

Once-a-year calibration:

Save time with annual calibration.

Swift results:

Test results within 30 seconds.

Extensive memory:

Store up to 100,000 events.

User-friendly LEDs:

Tri-color LEDs provide clear results with pass, warn, and fail indicators.

How ALCOLOCK™ V3 Works

Before starting your vehicle, a breath sample is required. Within seconds, the ALCOLOCK™ V3 analyzes the sample and displays instructions. If your breath alcohol concentration (BrAC) exceeds the preset limit, the vehicle won’t start.

Once the engine is running, the device can prompt random breath samples or only an initial test at startup, based on your preference.

Ignition Interlock for Commercial Vehicles

There are three main areas to look at when it comes to ignition interlocks for commercial vehicles.

Employer Exemption

If you drive a commercial vehicle for work, but you don’t own it — your employer does — then it is up to your employer if they want you to drive their vehicle at all after a DUI/DWI conviction. And then, if they will allow you to drive their commercial vehicle, the employer has to decide if they will allow an ignition interlock device to be installed.

Some states allow an employer exemption to the ignition interlock device requirement. If your state is one of those that allow an employer exemption, you will need to fill out the proper paperwork to qualify for the exemption, and carry it with you while you are driving the employer-owned commercial vehicle. You are only allowed to drive that vehicle for work purposes. You must drive your own IID-equipped personal vehicle to and from work, and for any other personal business.

You Are Self-Employed

If you are the employer, you cannot get an employer exemption. Most states will treat your commercial vehicle the same as they would your personal vehicle, and require you to install an ignition interlock on your commercial vehicle. This applies if it’s a work truck/van that you drive to construction sites or to customer’s homes, whether you’re making deliveries for your company, or whatever.

If you own a commercial vehicle and your state requires you to install an ignition interlock device on all of the vehicles registered to you, or even just the vehicle you primarily use, if that vehicle is a commercial vehicle, you have to get an ignition interlock installed.

Voluntary Ignition Interlocks
for Commercial Vehicles

Some fleet managers may want to consider installing ignition interlock devices in some or all commercial vehicles. It’s a preventive measure, and helps ensure no one in your employ can drink and drive. The cost of installing IIDs in your fleet as a proactive measure is far less than the expenses you face if one of your employees is in a drunk driving accident. Your expenses from such an accident might include:

  • A lawsuit
  • Damage to company reputation
  • Increased fleet insurance rates
  • Repair/replacement costs of damaged vehicle
  • Health insurance costs for injured driver

Benefits for

The ALCOLOCK™ V3 offers myriad benefits to commercial drivers. It creates a positive public image, safeguards
passengers and cargo, and helps maintain an impeccable fleet. Integration with fleet management systems offers real-time alcohol violation alerts, ensuring adherence to alcohol abstinence policies during transit.

Benefits for

For personal users, the ALCOLOCK™ V3 provides peace of mind for parents and offers protection from impaired driving. It doubles as a theft immobilizer and may lead to potential insurance premium reductions.

When and Where ALCOLOCK™ V3 is Used

The ALCOLOCK™ V3 is widely used in commercial settings such as transport trucks, public transportation, school buses, and ships. Private users also opt for this device to protect family members and young drivers.

Ready to Enhance Your Driving Safety or Your Fleet’s Reputation?

Reach out to us at Johnny’s
Interlock Main Office,

8308 Long Point Rd., Houston,
TX 77055.

Call us



Don’t wait. Ensure a safer driving experience with the ALCOLOCK™ V3.
Reach out to us today for installations, inquiries, or quotes.