3.2 Standard Hours Work and Rest Limits
Key Takeaways
- A fatigue-regulated heavy vehicle is a truck with a GVM over 12 tonnes, a truck and trailer combination with a combined GVM over 12 tonnes, or a bus with a GVM over 4.5 tonnes that seats more than 12 adults including the driver.
- Under Standard Hours a solo driver may work at most 12 hours in any 24 hours with 7 continuous hours of stationary rest, 72 hours in any 7 days with 24 continuous hours of stationary rest, and 144 hours in any 14 days with 4 night rests including 2 consecutive.
- Short rest break rules require at least 15 continuous minutes of rest in any 5.5 hours, at least 30 minutes of rest in blocks of 15 continuous minutes in any 8 hours, and at least 60 minutes in blocks of 15 continuous minutes in any 11 hours.
- Work time encompasses all operational activities including driving, loading, unloading, refuelling, vehicle inspections, cleaning, and completing paperwork or work diaries—not just time spent behind the steering wheel.
- Two-up drivers are capped at the same 12 hours work in any 24-hour period as solo drivers, but their multi-day caps are lower — 60 hours in 7 days and 120 hours in 14 days — offset by being allowed 5 continuous hours of rest in an approved moving sleeper berth.
3.2 Standard Hours Work and Rest Limits
The Heavy Vehicle National Law (HVNL) establishes prescriptive working and resting hours to prevent heavy vehicle driver exhaustion. Operating under Standard Hours is the baseline regulatory framework for all heavy vehicle operators in New South Wales who are not accredited under an alternative fatigue management scheme. Understanding these strict limits and knowing how time is classified is vital for legal compliance and safe operation.
What is a Fatigue-Regulated Heavy Vehicle?
Not all motor vehicles or light commercial trucks are subject to HVNL fatigue hours. Under the HVNL, a Fatigue-Regulated Heavy Vehicle is specifically defined as:
- A single motor vehicle with a Gross Vehicle Mass (GVM) of more than 12.0 tonnes.
- A combination of vehicles (such as a prime mover and semi-trailer, or a truck and trailer) where the total Gross Combination Mass (GCM) or any vehicle in the combination exceeds 12.0 tonnes.
- A fatigue-regulated bus, which is a bus with a GVM of more than 4.5 tonnes that seats more than 12 adults (including the driver).
Night rest defined. A "night rest" under Standard Hours means 7 continuous hours of rest taken between 10 pm and 8 am, or 24 continuous hours of stationary rest. This is the unit the 14-day rule is written in — it is not the same thing as a 24-hour break.
Important Distinction: While a vehicle over 4.5 tonnes GVM is classified as a heavy vehicle in NSW for driver licensing, road rules, and general mass compliance, the specific fatigue work and rest limits and National Driver Work Diary rules apply strictly to vehicles exceeding 12.0 tonnes GVM (or buses with >12 adult seats).
Defining "Work Time" vs "Rest Time"
A common and dangerous misconception is that "work time" only includes driving. Under HVNL Section 221, the law defines work time comprehensively:
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| WORK TIME VS REST TIME |
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| WORK TIME (Any task associated with commercial vehicle operation): |
| • Driving a fatigue-regulated heavy vehicle |
| • Loading, unloading, or supervising the loading/unloading of goods |
| • Coupling, uncoupling, or checking trailers and mechanical connections |
| • Securing, inspecting, or adjusting load restraints and tarpaulins |
| • Pre-trip walkaround inspections and routine maintenance |
| • Refuelling the vehicle and topping up fluids (oil, coolant, AdBlue) |
| • Washing, cleaning, or sweeping out the vehicle or trailer |
| • Completing paperwork, delivery manifests, or National Driver Work Diaries |
| • Queuing in freight terminals or waiting for loading bays |
| • Attending depot safety meetings or dispatch briefings |
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| REST TIME: |
| • All continuous time that is NOT work time. |
| • STATIONARY REST: Rest taken out of the vehicle, or resting in an approved |
| ADR-compliant sleeper berth while the vehicle is completely stationary. |
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Standard Hours Solo Driver Work and Rest Limits
Solo drivers operating under Standard Hours must comply with maximum work limits and minimum rest requirements across multiple overlapping time intervals:
| Time Frame | Maximum Work Limit | Mandatory Minimum Rest Requirement |
|---|---|---|
| In any 5.5 hour period | 5 hours 15 minutes (5.25 h) | Minimum 15 continuous minutes rest |
| In any 8.0 hour period | 7 hours 30 minutes (7.5 h) | Minimum 30 minutes rest, taken in blocks of at least 15 continuous minutes |
| In any 11.0 hour period | 10 hours (10.0 h) | Minimum 60 minutes rest, taken in blocks of at least 15 continuous minutes |
| In any 24.0 hour period | 12 hours (12.0 h) | Minimum 7 continuous hours of stationary rest |
| In any 7-day period<br>(168 continuous hours) | 72 hours (72.0 h) | Minimum 24 continuous hours of stationary rest |
| In any 14-day period<br>(336 continuous hours) | 144 hours (144.0 h) | 4 night rests, and at least 2 of those night rests must be consecutive |
The 24-Hour Period Rule
In any rolling 24-hour window, a solo driver is permitted to work a maximum of 12 hours. The driver must take at least 7 continuous hours of stationary rest in that same 24-hour period. The remaining 5 hours of the 24-hour cycle may be made up of additional rest breaks, meal breaks, or short rest intervals.
Short Rest Break Mechanics
Short rest breaks are designed to break up continuous driving and loading:
- If you drive or work for 5 hours and 15 minutes, you must take at least 15 continuous minutes of rest before performing any further work.
- In an 8-hour shift, your total rest must reach at least 30 minutes. You can achieve this by taking two separate 15-minute rest breaks or one single 30-minute rest break.
- Rest periods shorter than 15 continuous minutes do not count towards your legal rest requirements under HVNL.
The "Rolling Period" Principle
A vital legal concept tested in the HVKT is the rolling period. Work and rest limits do not reset at midnight or at the start of a calendar day. Instead, an authorized enforcement officer evaluates compliance across any rolling 24-hour, 7-day, or 14-day period.
ROLLING 24-HOUR ASSESSMENT WINDOW
06:00 (Day 1) -----------------------------------> 06:00 (Day 2)
[ Looking backward across ANY 24-hour slice: ]
[ Maximum Work: <= 12 hours ]
[ Minimum Continuous Stationary Rest: >= 7h ]
If at any single moment during your journey, looking backward over the preceding 24 hours, you have worked 12 hours and 15 minutes, or have not taken 7 continuous hours of stationary rest, you have committed an offence.
Two-Up Driver Operations
A two-up operation involves two qualified drivers sharing the driving and operating responsibilities of a fatigue-regulated heavy vehicle equipped with an approved Australian Design Rule (ADR 42) sleeper berth.
Key Two-Up Rules under Standard Hours:
- In any 24-hour period: Each driver may work a maximum of 12 hours — the same cap as a solo driver. Two-up does not buy you a longer day under Standard Hours.
- Rest requirement in 24 hours: Each driver must take 5 continuous hours of stationary rest, or 5 continuous hours of rest in an approved sleeper berth while the vehicle is moving. This berth concession is the real benefit of two-up operation.
- In any 52-hour period: At least 10 continuous hours of stationary rest.
- In any 7-day period: Maximum 60 hours of work time, with 24 hours of continuous stationary rest plus a further 24 hours of stationary rest in blocks of at least 7 continuous hours.
- In any 14-day period: Maximum 120 hours of work time, with 4 night rests including 2 consecutive night rests.
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| SOLO VS TWO-UP COMPARISON (24h) |
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| FEATURE | SOLO DRIVER | TWO-UP DRIVER |
| Maximum Work Time | 12 hours | 12 hours |
| Continuous Rest in 24h | 7h STATIONARY REST | 5h in moving sleeper berth or |
| | | 5h stationary rest |
| Max work in 7 days | 72 hours | 60 hours |
| Max work in 14 days | 144 hours | 120 hours |
| Rest in Moving Vehicle | ILLEGAL (counts as work)| PERMITTED in approved berth |
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Transport Scenario: Sydney to Brisbane Solo Transit
A solo driver departs Chullora (Sydney) for Acacia Ridge (Brisbane) at 6:00 am on Monday:
- 06:00 to 11:15 (5h 15m): Driving and heavy vehicle pre-trip check. Total work = 5h 15m. The driver reaches the maximum work threshold for a 5.5-hour period.
- 11:15 to 11:45 (30m): Mandatory stationary rest break at Taree service centre. This fulfills the 15-minute short break rule and contributes towards the 8-hour requirement.
- 11:45 to 16:30 (4h 45m): Driving to Kempsey. Total shift work = 10h 00m. Total rest = 30m.
- 16:30 to 17:00 (30m): Mandatory rest break taken at Kempsey. Total rest now equals 60m (satisfying the 11-hour rule).
- 17:00 to 19:00 (2h 00m): Driving to Grafton. Total work reaches 12 hours (the daily maximum).
- 19:00 (Monday) to 02:00 (Tuesday) (7h 00m): The driver parks at a dedicated rest area and completes 7 continuous hours of stationary rest in the sleeper berth before undertaking any further work.
Common HVKT Exam Traps
- Exam Trap 1: Believing you can split the 7-hour continuous stationary rest into two 3.5-hour blocks under Standard Hours. Reality: Under Standard Hours solo rules, the 7 hours of stationary rest must be completely unbroken and continuous.
- Exam Trap 2: Counting time spent loading, tying down freight, or filling out the work diary as rest time. Reality: Any task connected with the vehicle or transport task is classified as work time.
- Exam Trap 3: Reading the 14-day rule as four 24-hour breaks. Reality: Standard Hours requires 4 night rests in any 14-day period, including 2 consecutive night rests. A night rest is 7 continuous hours between 10 pm and 8 am, or 24 continuous hours of stationary rest — so four full days off is one way of satisfying it, but it is not what the rule says.
- Exam Trap 4: Applying solo numbers to two-up work. Reality: two-up drivers are still capped at 12 hours work in 24 hours under Standard Hours, but their multi-day caps are lower, not higher — 60 hours in 7 days and 120 hours in 14 days.
Under Standard Hours for a solo driver, what is the maximum allowable work time and minimum continuous stationary rest required in any 24-hour period?
Which of the following vehicles is legally classified as a fatigue-regulated heavy vehicle under the Heavy Vehicle National Law (HVNL)?
Under Standard Hours, what rest must a solo driver of a fatigue-regulated heavy vehicle take in any 14-day (336-hour) period?
A heavy vehicle driver spends 45 minutes refuelling their truck, checking tyre pressures, and completing their daily work diary sheet. How must this time be recorded under the HVNL?
Two drivers are operating two-up under Standard Hours in a fatigue-regulated heavy vehicle. What is each driver's maximum work time in any 24-hour period, and how much work may they do in any 7-day period?