Personal Reference Period
The time that has passed since your most recent recorded intake, updated automatically.
Overview
The Personal Reference Period measures the Time Since Intake — the time that has passed since your most recent recorded intake — and updates automatically.
How it works
The timer measures the Time Since Intake based on your most recent recorded intake. Every new intake resets the timer, which then continues counting until another intake is recorded.
Default length
DriveClear uses a default 12-hour Personal Reference Period. You may increase this period in Settings if you prefer a longer personal reference period.
Where to find it
View it on the Home screen and in the Roadside Summary.
The Personal Reference Period is a personal tracking feature. It does not determine impairment, fitness to drive or legal compliance.
Always follow the advice of your prescribing healthcare professional regarding your treatment.
Tips
Record each intake promptly and keep your records up to date.