Automated sobriety checks that keep every trip safe
Use IoT Logic to turn alcohol sensor readings into automatic engine blocking, fair testing and safer fleets.
- Replace manual, paper-based checks with real-time automation
- Block ignition if intoxication is detected, automatically
- Scale safety workflows across hundreds or thousands of vehicles
Drunk driving is still one of the biggest road safety risks
Up to 30% of all fatal traffic accidents are alcohol-related. For fleet operators, that's not just a statistic – it's a direct threat to drivers, passengers and business continuity. Traditional manual sobriety checks are slow, inconsistent and hard to audit. With IoT-based automation, sobriety testing becomes objective, repeatable and fully traceable, every single time.
Alcohol-related accidents
Up to 30% of all traffic fatalities worldwide
High risk of human error
With manual checks
Growing customer expectation
For verifiable safety measures
How a regional fleet monitoring provider redefined driver safety
A leading fleet monitoring provider serving mixed fleets — from long-haul trucks to passenger buses — wanted to move beyond manual breath checks and paper logs. Together with Navixy, they implemented an automated alcohol testing workflow powered by IoT Logic. Every trip now starts with a mandatory breath test, and ignition is blocked automatically if the driver is over the limit.
Industry
Fleet monitoring & telematics
Fleet
Long-haul trucks and passenger buses
Goal
Prevent drunk driving and make sobriety checks transparent and fair
From breath sample to engine block – all in seconds
Driver breathes into the alcohol sensor
Before starting the vehicle, the driver provides a breath sample using a connected alcohol sensor installed in the cab. Every trip begins with a verified sobriety check.
Alcohol sensor sends analog data to the GPS tracker
The sensor converts breath alcohol concentration into an analog signal and forwards it to the GPS tracker.
IoT Logic evaluates thresholds in real time
The tracker sends the analog value to Navixy. IoT Logic compares it against predefined thresholds (e.g. 'no breath', 'sober', 'over limit') and decides what to do next.
Engine is blocked or unlocked automatically
If the driver is sober, ignition is allowed. If the sensor detects intoxication or no valid breath sample, IoT Logic triggers output control to activate the immobilizer and block the engine.
Condition-based automation you can configure in minutes
Instead of hard-coding logic into devices, the customer moved the decision-making layer into IoT Logic. Thresholds, conditions and actions are all managed in the platform, not in firmware.
Flexible thresholds
Define 'no breath', 'sober' and 'over limit' values and adjust them without reconfiguring hardware.
Reusable flows
Apply the same IoT Logic flow to dozens or hundreds of GPS trackers in a few clicks.
Safe behavior by default
Engine stays blocked until valid conditions are met (e.g. breath detected, within limit, ignition off).
Law-compliant
Adapt thresholds and rules to local regulations and company policies.
IF analog_input < 0.02 THEN status = "sober" unlock_ignition() ELSE IF analog_input >= 0.02 THEN status = "over_limit" block_ignition() ELSE status = "no_breath" block_ignition() END IF
Build richer safety workflows on top of a simple check
The same IoT Logic flow can be extended with extra checks to match your safety policy and local regulations.
Driver identification
Block the engine if an unauthorized driver key or ID is used – even if the driver is sober.
Multiple breath attempts
Allow a configurable number of retries if the first test was too weak or invalid.
Shift timing and rest rules
Only permit tests and engine start within approved working hours. Trigger alerts if a driver tries to start early, late or too often.
Multi-level thresholds
Introduce 'suspicion' zones that send alerts instead of blocking the engine, for borderline cases.
From manual control to measurable safety improvements
Automation removed human bias from the sobriety checks. Drivers now see the process as objective and predictable, which helps build trust in the system. For the monitoring provider, daily control became faster, fully auditable and easier to scale as their customer base grows.
Consistent, unbiased checks
For every driver and every vehicle
Faster, paperless daily routines
For dispatchers and managers
Stronger competitive edge
Thanks to visible safety innovation
Why automation actually improves driver trust
Automated checks follow the same rules for everyone. There's no 'good mood / bad mood' factor and no room for selective enforcement. When drivers understand how the system works and why it exists, they tend to see it as protection rather than punishment.
Transparent rules
Objective decisions
Clear communication and training
Ready to automate fleet safety?
Whether you are a telematics service provider, systems integrator or fleet owner, IoT Logic lets you build and deploy safety workflows in days, not months.