17-week WTD average calculator
Enter recorded working time for each available week, separated by commas or new lines. Exclude qualifying breaks and valid POA.
Important: This tool averages the figures entered. Confirm what counts as working time, the applicable reference period and any agreement with your employer.
What counts as HGV working time?
Working time includes driving and other work such as loading, unloading, cleaning, maintenance and administrative duties. It can also include periods when the worker cannot freely dispose of their time.
What is normally excluded?
Qualifying breaks, rest and properly recorded periods of availability are normally excluded. Enter working-time totals only—not total shift duration.
Why the reference period matters
The common reference period is 17 weeks, but permitted agreements can change its length. Check the period used by your employer before treating a partial calculation as a compliance result.
Working time is different from driving time
The WTD average is separate from the 90-hour fortnightly driving limit. Both may apply at the same time.
Common questions
Can an HGV driver opt out of the 48-hour WTD average?
There is no individual opt-out from the sector-specific 48-hour average for mobile workers in scope.
Does POA count towards the average?
A valid period of availability is normally excluded from working time.
Can one week exceed 48 hours?
Yes, if the average remains within the applicable limit, but working time must not exceed 60 hours in a single week.
Checked against the DVSA’s Drivers’ hours and tachographs: goods vehicles. Rules, agreements, exemptions and individual circumstances can change which requirements apply.
Keep the working week in one place.
CabLog helps UK HGV drivers record shifts, estimated pay, mileage, expenses and working-week totals.
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