Heavy Vehicle Fatigue Calculator
Enter your hours and see exactly how much driving and work time you have left, when your next rest break is due, and when your major rest has to start.
Your hours
Within limits
Standard Hours · time now 06:4105:15:00
15 min break due by 11:56
06:30:00
7 hr continuous stationary rest, starting by 13:11
4 hr 30 min
of 12 hr allowed
5 hr 30 min
of 12 hr allowed
7 hr 30 min
Driving must stop by 14:11
6 hr 30 min
All work must stop by 13:11
24 hour timeline
From your work start at 06:00 — the marker shows where you are now.
TruckProfit AI — your status in plain English
You started work at 06:00 and you're operating under Standard Hours. So far you've recorded 4 hr 30 min driving and 5 hr 30 min total work, with 30 min of rest taken. You have approximately 5 hr 15 min before your next required rest break under your selected fatigue option. That leaves 7 hr 30 min of driving time and 6 hr 30 min of work time, and your continuous 7 hr major rest needs to start within 6 hr 30 min (by 13:11). You're tracking comfortably inside your limits at the moment.
Important disclaimer
This fatigue calculator is an aid only. It gives an indicative view based on the hours you enter and does not replace your work diary, your operator's accreditation conditions, or legal advice. Drivers and operators must always comply with official NHVR fatigue laws and requirements under the Heavy Vehicle National Law, including all work and rest limits, record keeping and Chain of Responsibility duties. Always check the current rules at the NHVR fatigue management guidance. If you are tired, stop and rest regardless of what any calculator says.