VOLUNTARY INTERLOCK DEVICES FOR SAFER DRIVING IN NEW ZEALAND

A voluntary interlock is installed by choice and is not linked to any court ordered programme. The device checks for alcohol before the vehicle starts and blocks the ignition if alcohol is detected. Drivers simply breathe into the handset, wait for a clear reading and continue their journey as normal. The experience feels similar to using a compact breathalyser attached to the dashboard.

Unlike mandatory interlocks, voluntary ignition interlock devices only require calibration every six months. They offer the same reliability and fuel cell accuracy used in police grade technology, giving families and businesses confidence that the readings are consistent and dependable.

Families often install a voluntary interlock to keep young or vulnerable drivers safe. The device becomes part of a family routine, offering reassurance that the car cannot be driven while impaired. Individuals use voluntary interlocks to support new habits, especially if they want a safeguard after social occasions.

Businesses and fleet operators also rely on voluntary ignition interlock devices for trucks, utes, forklifts, machinery and high risk vehicles. On work sites or busy roads, the device becomes a practical safety layer that protects staff, customers and company assets. Full vehicle compatibility means voluntary interlocks can be fitted to petrol, diesel, hybrid and electric vehicles across New Zealand.

Voluntary interlock devices are simple to use. Drivers provide a quick, steady breath before starting the engine, similar to blowing gently through a straw. The handset gives clear visual prompts that guide you through each step.

The device is calibrated every six months which keeps maintenance light and predictable. Programming can be tailored to suit your needs, whether it is a shared family car or a commercial vehicle with multiple drivers throughout the day. Data is stored locally on the device and only accessed at your request which gives you control over how information is used.

The installation is fully reversible. Our technicians return the wiring to pre installation condition so your vehicle looks exactly as it did before the device was installed.

The process is fast and straightforward. When you call our team, we create your file and confirm the details for your voluntary interlock device. We then refer you to an installer near your location. With over 80 certified installers around New Zealand, you can typically book an installation within one or two days. After installation, our team shows you how to use the handset so you feel confident from the moment you drive away.